Anchor: #i1005631
main inside lane
The main inside lane, on a multi-lane highway is the extreme left-hand traffic lane, in the direction of traffic flow, of those lanes available for traffic moving in one direction. (Also referred to as left lane).
Anchor: #i1005642
main middle lane
The main middle traffic lane is between the outside lane and inside lane of a multi-lane highway (also referred to as left middle lane and right middle lane or numbered in consecutive order starting with the outside lane as first lane).
Anchor: #i1005652
main outside lane
The main outside lane on a multi-lane highway is the extreme right hand through-traffic lane, in the direction of traffic flow, of those lanes available for traffic moving in one direction (also referred to as right lane or first lane).
Anchor: #i1005672
Maintenance includes activities which involve the repair or preservation of an existing facility to prevent that facility’s deterioration to an unsafe or irreparable state, or which involves the treatment of an existing facility or its environs to meet acceptable standards of operation or aesthetic quality.
Maintenance Collection
Anchor: #i1005687
maintenance agreement
A maintenance agreement is a contract between the department and another person or entity for the maintenance of TxDOT’s property or equipment.
Anchor: #i1005697
maintenance area
  1. A maintenance area for air quality is a geographic area that was previously designated as a non-attainment area.
  2. A maintenance area is any geographic region of Texas designated nonattainment pursuant to the CAA Amendments of 1990 and subsequently redesignated to attainment subject to the requirement to develop a plan that will assure maintenance in accordance with standards.
  3. Transportation Planning and Programming Collection
Anchor: #i1005717
Maintenance Division
The Maintenance Division oversees architectural services and provides general oversight of the letting, management, and administration of maintenance contracts.
maintenance level of service
Maintenance level of service is the condition a component of the state highway system should be in under a given level of funding.
Administrative Circular 5-92
Anchor: #i1027267
Maintenance Management Information System
The Maintenance Management Information System is an online system that helps gather and analyze data for a variety of pruposes. MMIS is designed to: 1)collect data on selected routine maintenance functions, which together account for the majority of maintenance expenditures, 2) draw data from other computer systems to generate reports relating maintenance costs to specific roadway segments, and 3)maintain an inventory by county of the reference er limits of every state-maintained highway in Texas.
MMIS Manual
Anchor: #i1005766
maintenance, routine
Routine maintenance is generally restricted to work of a routine nature involving one-half mile or less.
Anchor: #i1005776
main-traveled way
The main-traveled way is the traveled way of a highway that carries through traffic. In the case of a divided highway, the traveled way of each of the separate roadways for traffic in opposite directions is a main-traveled way. It does not include such facilities as frontage roads, turning roadways, or parking areas.
Right of Way Manual
Anchor: #i1005801
major category
Major category is a twenty-character field of one or more words that identifies an item.Bolt, washer
Materials And Supplies Management System Manual
Anchor: #i1005817
major collector
A major collector is an area public way for purposes of vehicular travel, usually interstate or federal highways; includes the entire area within the right of way.
Right of Way Collection
major equipment
Major equipment is any item that meets any of these criteria:
  • The unit matches an EOS Class Code and description listed in the TACS table TEOS001
  • The cost of owning and operating the equipment is an important consideration.
  • There are significant operating costs and/or capital investments for distribution to specific cost centers.
Purchasing Manual
Anchor: #i1005875
major investment study
  1. A study of multimodal improvements of substantial cost expected to have significant effect on capacity, traffic, level of service, or mode share at the transportation corridor level. Note: The term MIS will no longer be used under TEA-21.
  2. A major investment study is a tool for making better decisions at an early time in the transportation planning process. It provides decision-makers with information on options available for addressing problems before investment decisions are made.
  3. Transportation Planning and Programming Collection
Anchor: #i1005900
major items of work
Major items of work are any individual bid item included in the proposal that has a total cost equal to or greater than 10% of the original contract or $100,000.00, whichever is less.
Anchor: #i1005910
major revision
A major revision is an amendment to the Statewide Transportation Improvement Program involving a reallocation of funds between two or more districts or two or more metropolitan planning organizations or a metropolitan planning organization and a district.
Transportation Planning and Programming Collection
Anchor: #i1005924
major work category
Major work category is a task that constitutes a large amount of a project or is important or critical to completion of work.
Engineering, Architectural and Surveying Services Manual
Anchor: #i1005949
Management Information System
The Management Information System is a set of large computer programs that consists of EOS, MES, HRMS, FINS, MSMS, SLD, and MMIS.
Anchor: #i1005964
management reports
Management reports are generally under the control of the division to which the reports are related. All of these reports use the information produced by the department’s automated systems.
Anchor: #i1015289
management section
A management section is a Pavement Management Information System (PMIS) term which describes a section of pavement, of similar structure, that the engineer intends to maintain in a uniform manner.
Pavement Management Information System (PMIS) Users Manual
Anchor: #i1005984
Management Services Office (former)
The former Management Services Office oversaw efforts to implement the department’s Strategic Plan for 1995 through 1999, coordinated with the Texas Transportation Plan which maps out TxDOT goals for the next 20 years. In March of 1998, MAN became the Strategic Management Section of the Finance Division.
Inside TxDOT
Anchor: #i1006003
management system
A management system is a systematic process, designed to assist decision-makers in making cost-effective use of limited resources to improve the efficiency of, and protect the investment in, the nation's existing and future transportation infrastructure. The infrastructure includes identification of performance measures; data collection and analysis; identification of needs; evaluation, selection, and implementation of appropriate strategies/actions to address the needs; and evaluation of effectiveness of implemented strategies/actions.
Transportation Planning and Programming Collection
Anchor: #i1006017
Management Team (former)
Prior to March of 1998, the Management Team referred to the Senior Management Team, all the district engineers, all the division directors, and all directors of special offices.
TxDOT Directive No. 3-93
Anchor: #i1006036
manager number
Manager number is the unique three-digit number of the person responsible for an account.
Finance Division
Anchor: #i1006051
manager summary
Manager summary is a summation of charges to all accounts during a specific reporting period for a specific manager.
Finance Division
Anchor: #i1015902
management trail
A management trail is the documents which demonstrate that all required internal controls and management practices have been followed. The purpose is to provide the information for management use and review, rather than for an auditor. Frequently inaccurately referred to as “audit trail” because its deficiencies are common discrepancies in audit reports.
managing office
  1. Managing office is the D/D/O/R that is funding an outsourced project and/or whose staff (including the project manager, contract manager, as well as contract and accounting personnel) has a role in some aspect of contract administration.
  2. Contract Management Manual
  3. Managing office is the division, office, or district with the responsibility for awarding and managing the contract.
  4. Engineering, Architectural and Surveying Services Manual
Anchor: #i1006114
managing officer
Managing officer is the division director, office director,or district engineer of the managing office.
Engineering, Architectural and Surveying Services Manual
Anchor: #i1006129
mandatory referral
A mandatory referral is a referral to the Employee Assistance Program (EAP) that requires an employee to report to the EAP and complete treatment or be terminated from employment with the department.
Human Resources Manual
Anchor: #i1006143
Manholes are underground structures with an opening for manual access.
Anchor: #i1006153
man hours
Man hours are hours reported on time sheets as related to an account.
Finance Division
Anchor: #i1006168
Manifest is a five-part Texas Commission on Environmental Quality form, Whole Used or Scrap Tire Manifest. Districts can order the manifest forms from their Regional Distribution Center under DHT # 144766.
Equipment Manual
Anchor: #i1006183
Manning’s Formula
Manning’s Formula is an equation for the value of coefficient C in the Chezy Formula, the factors of which are the hydraulic radius and a coefficient of roughness.
Manual on Uniform Traffic Control Devices
The Manual on Uniform Traffic Control Devices is a guide to provide uniformity in the placement of signs, pavement markings and traffic signals.
Anchor: #i1006220
Manufacturer is a three-character code that identifies the manufacturer. It much match a code on the MFGNAME Table and Characteristics System (TACS) table.
Materials And Supplies Management System Manual
Anchor: #i1006244
manufacturer’s number
Manufacturer’s number is a 25-character alphanumeric field used to display either the manufacturer’s part number or the commodity number of a General Services Commission contract item.
Materials And Supplies Management System Manual
Anchor: #i1006268
marginal distribution
Marginal distribution is the distribution of a variable (e.g., number of households) by a single characteristic of the variable (e.g., household size). An example would be the number of households distributed by household size. When a variable is distributed by more than two characteristics (e.g., household size and household income), the row and column sums of the two way distribution are referred to as the marginal distributions.
Traffic Data and Analysis Manual
Anchor: #i1006282
marginal functions
Marginal functions are job duties incidental to a position or performed infrequently, if at all.
Human Resources Manual
Anchor: #i1006296
market value
The price that the property would bring when offered for sale by one who desires, but is not obliged to sell, and is bought by one who is under no necessity of buying it. When establishing a market value, one must take into consideration all of the uses to which it is reasonably adaptable and for which it either is, or in all reasonable probability will become, available within the reasonable future.
Real Estate Acquisition Guide for Local Public Agencies
Anchor: #i1006311
mass transit
Mass transit is a transportation system which provides for the movement of a large number of people to various locations, along designated routes.
Anchor: #i1006321
mast arm
A mast arm is an attachment to a lighting pole on the end of which a luminaire is mounted.
Highway Illumination Manual
Anchor: #master_grant_agreement
Master Grant Agreement
The master grant agreement contains the standard clauses common to public transportation grants. See also project grant agreement (PGA).
Public Transportation Collection
Anchor: #i1006383
A match is state or local funds used to match federal-aid funds for federal-aid program projects. The majority of federal-aid programs require a 20 percent state/local match. Safety projects or those on the Interstate system may have a 10 percent match requirement.
Transportation Programming and Scheduling Manual
Anchor: #i1006397
match-cure cylinders
Match-cure cylinders are the release of tension strength cylinders heated by the match cure molds along the reference temperature profile of the prestressed concrete member.
Manual of Testing Procedures
Anchor: #i1006411
match-cure system
Match-cure system is an electronic system capable of monitoring the in-situ concrete temperature and heating corresponding match cure cylinders along the same temperature profile curve.
Manual of Testing Procedures
Anchor: #i1006450
materially unbalanced bid
A materially unbalanced bid is a bid that generates a reasonable doubt that award to the bidder submitting a mathematically unbalanced bid will result in the lowest ultimate cost to the state.
Letting Manual
Anchor: #i1006474
Material Safety Data Sheets
The material safety data sheet is an information outline for hazardous products used in the workplace.
Occupational Safety Manual
Anchor: #i1006493
Materials and Tests Division (former)
The Materials and Tests Division verifies that all the materials used in construction and maintenance are uniformly tested for quality, and conducts research to improve materials. In March of 1998, MAT became a section in the Construction Division.
Inside TxDOT
Anchor: #i1006532
mathematically unbalanced bid
A mathematically unbalanced bid is a bid containing lump sum or unit bid items that do not reflect reasonable actual costs plus a reasonable proportionate share of the bidder’s anticipated profit, overhead costs, and other indirect costs.
Letting Manual
maximum density
Maximum density is the highest density calculated on the basis of dry weight of material per cubic foot.
Manual of Testing Materials
Anchor: #i1006560
maximum dry density
Maximum dry density is the maximum value obtained by the compaction curve using the specified compactive effort.
Manual of Testing Procedures
Anchor: #i1006574
May precedes a provision that is permissive; no requirement for implementation is intended though good practice may suggest compliance.
Occupational Safety Manual
Anchor: #i1017862
‘may call’ status
‘May call’ status is the condition in which employees are notified by their supervisors in advance that they may be contacted during off-duty hours to see if they can report to work. Employees on this status are not required to be available for work, their activities are not restricted in any way, and they do not receive standby time credit or compensation for this time. Employees who are called while on this status and who choose to report to work must meet all the usual department employment standards and rules described in the Human Resources Manual.
Human Resources Manual
Anchor: #i1006600
MD5 is an algorithm used to verify data integrity. This is done through the creation of a 128-bit message digest from data input (which may be a message of any length). It is "computationally infeasible" (according to the standard) for any two messages, input to MD5 algorithm, to have output with the same message digest. It is also infeasible for a false message to be created through apprehension of the message digest.
Information Security Manual
Anchor: #i1006615
The median is the portion of a divided highway separating the opposing traffic flows. A median may be traversable or nontraversable.
Access Management Manual
Anchor: #i1006630
median, depressed
A depressed median is one that is lower in elevation than the traveled way and designed to carry a certain portion of the surface water.
Anchor: #i1006640
median, non-traversable
A non-traversable median is a physical barrier in a roadway or driveway that separates vehicular traffic traveling in opposite directions. Non-traversable medians include physical barriers (such as a concrete barrier, a raised concrete curb and/or island, and a grass or a swale median) that prohibit movement of traffic across the median.
Access Management Manual
Anchor: #i1006655
median, raised
A raised median is one that is higher in elevation than the traveled way and usually outlined with a curb.
Anchor: #i1006665
median, traversable
  1. A traversable median is a median that by its design does not physically discourage vehicles from entering or crossing over it. This may include painted medians.
  2. Access Management Manual
  3. A traversable median, whether raised, depressed or flush, consists of a visible separation without any physical obstruction and which can be crossed with ease and comfort.
Anchor: #i1006680
median barrier, concrete
A concrete median barrier is a type of median providing a physical obstruction to crossing.
median blister
A median blister is a raised median in an area between traffic lanes for control of vehicle movements.
Anchor: #i1006701
median opening, crossover
A median opening, also known as a crossover, is an opening in a median for crossing and turning traffic.
  1. Mediation is a process for resolving conflicts between employees or between employees and their supervisor or manager. It is a voluntary problem-solving process that includes a trained mediator as a neutral third party assigned by the Human Resources Division to coordinate a confidential session in an attempt to resolve their differences and develop a mutually satisfactory action plan.
  2. Human Resources Manual
  3. Mediation is a settlement procedure in which the property owner and the State attempt to voluntarily settle an eminent domain action after the Commissioners’ Hearing.
  4. Right of Way Collection
Anchor: #i1006742
meeting with affected property owners
Meeting with affected property owners is a type of meeting held with property owners anticipated to be affected by a transportation project. A MAPO is usually held for minor projects. See also public meetings.
Environmental Manual
Anchor: #i1006765
Megabits refer to megabits per second. One megabit per second equals 1 million bits per second.
Information Security Manual
Anchor: #i1006794
A membrane is a thin, plastic material used as reinforcement or seal on pavements, bridge decks, or underneath the roadbed surface.
Bridge Design Manual
Anchor: #i1006804
membrane curing
Membrane curing is the application of a liquid membrane-forming compound suitable for application on the finished surface of freshly-poured concrete to retard loss of water during the early hardening period.
Anchor: #i1006824
memorandum of understanding
A memorandum of understanding is a formal document which outlines the relationship between agencies or parties, including responsibilities and jurisdiction of each party, which sets forth within its provisions agreements between parties.
Anchor: #i1006839
memorial highway
A memorial highway is a segment of a designated highway given a name, by a legislative or local governmental act, as a memorial to a person or group of people; considered a secondary route designation.
Texas Reference Marker (TRM) System User's Manual
Anchor: #i1006854
Merging is the converging of traffic from a traffic lane or on ramp into another traffic lane.
Anchor: #i1006874
metes and bounds
Metes and bounds are the limits and boundary of a tract of land. A metes and bounds description usually is a description that uses bearings (the angles East or West of due North or due South) and distances (usually in feet or chains) to describe the perimeter of a tract.
Survey Manual
Anchor: #i1006884
Meter/kilogram system of units
Anchor: #i1006924
metropolitan area
A metropolitan area (Bureau of the Census definition): The general concept of a metropolitan area (MA) is one of a large population nucleus, together with adjacent communities that have a high degree of economic and social integration with that nucleus. Some MAs are defined around two or more nuclei. Each MA must contain either a place (as defined by the Bureau of the Census) with a minimum population of 50,000 or a Census Bureau-defined urbanized area and a total MA population of at least 100,000 (75,000 in New England). An MA comprises one or more central counties. An MA may also include one or more outlying counties that have a close economic and social relationship with the central county.
Transportation Planning and Programming Collection
Anchor: #i1006943
metropolitan area boundary
A metropolitan area boundary is the delineated boundary that encompasses the Metropolitan Planning Area.
Transportation Planning and Programming Collection
Anchor: #i1006962
metropolitan area network
A Metropolitan Area Network is logically a collection of Local Area Networks connected via a high speed link (equal to or greater than Ethernet speed) that provides access to a LAN's resources on another LAN. A MAN is typically used by a small company spread over multiple buildings or a campus.
Information Security Manual
Anchor: #i1006981
metropolitan district
A metropolitan district is one of the geographical areas of the department managed by a district engineer that is headquartered in Austin, Corpus Christi, Dallas, El Paso, Fort Worth, Houston, Pharr, or San Antonio district.
Engineering, Architectural and Surveying Services Manual
Anchor: #i1007006
Metropolitan Planning Area
A metropolitan planning area is the geographic area in which the metropolitan transportation planning process required by 23 USC §134 and 49 USC §5303 of the Federal Transit Act must be carried out.
Transportation Planning and Programming Collection
Anchor: #i1007025
metropolitan planning area boundary
See metropolitan area boundary.
Transportation Planning and Programming Collection
Anchor: #i1007044
Metropolitan Planning Organization
  1. A metropolitan planning organization is an association of local agencies established to coordinate transportation planning and development activities within a metropolitan region. Establishment of the MPO is required, by law, in urban areas of over 50,000 population, if federal funds are to be used. The MPO consists of two groups. 1) The Policy board is comprised of officials representing the counties, cities, and state transportation agency. 2) The technical advisory group consists of professional planners and engineers who are usually employees of the same agencies.
  2. A metropolitan planning organization is the forum for cooperative transportation decision-making for the metropolitan planning area. It is also a term used generically to mean the organization in urbanized areas over 50,000 population that is responsible for carrying out the transportation planning process for the metropolitan area.
  3. Transportation Planning and Programming Collection
Anchor: #i1002094
Metropolitan Planning Organization Policy Board
The Metropolitan Planning Organization Policy Board is the forum and committee structure (e.g., Regional Transportation Council, Steering Committee, Policy Advisory Committee) established under 23 USC §134 49 USC §5303 and the Governor’s Designation Agreement as the group responsible for giving an MPO overall transportation policy guidance.
Transportation Planning and Programming Collection
Anchor: #i1007076
Metropolitan Statistical Area
Metropolitan statistical areas (Bureau of the Census definition) are relatively freestanding MAs. These areas are typically surrounded by non-metropolitan counties.
Transportation Planning and Programming Collection
Anchor: #i1007105
Metropolitan Transit Authority
A metropolitan or regional transit agency created under specific state statutes, supported by a dedicated local sales tax, and providing service in an urbanized area having a population of 200,000 or more. An MTA is commonly referred to as a transit authority.
Public Transportation Collection
Anchor: #i1007125
Metropolitan Transportation Authority
See metropolitan planning area.
Transportation Planning and Programming Collection
Anchor: #i1007144
Metropolitan Transportation Plan
The Metropolitan Transportation Plan is the official intermodal transportation plan that is developed and adopted through the metropolitan transportation planning process for the metropolitan planning area.
Transportation Planning and Programming Collection
Anchor: #i1007163
Microcomputer is a computer that contains a microprocessor.
Information Security Manual
Anchor: #i1007258
Miles per hour refers to the rate of speed at which a vehicle is traveling.
Traffic Safety
Anchor: #i1007284
mill test report
Mill test report for steel is a report from the producing mill on the base metal listing the chemical analysis, physical analysis; heat or lot number; specification used to manufacture the material; “Domestic Clause” stating that the steel or iron was melted and manufactured in the United States of America. Reporting of the chemical and physical analysis shall be as required by the applicable ASTM, AASHTO, ANSI, etc. Specification
Inspection Guide
Anchor: #i1007323
mineral filler
  1. A mineral filler is the smallest particles of aggregate used in asphalt mixtures. It consists of dry stone dust, slate dust, Portland cement or other minerals all of which must be free of foreign or injurious matter. At least 55 percent will pass a No. 200 sieve.
  2. Mineral filler is a fine aggregate or manufactured material used to supply particle sizes where the mix design is deficient in gradation. NOTE: This definition has been approved by the Specification Committee.
  3. Manual of Testing Procedures
Anchor: #i1002136
minimum allocation funds
Minimum allocation funds are the funds that the Secretary of Transportation allocates among the states under 23 USC §157(a). These funds are distributed in an amount sufficient to ensure that a state's percentage of the total apportionments in each such fiscal years and allocation for the prior year for certain programs shall not be less than 90 percent of the percentage of estimated tax payments attributable to highway users in the state paid into the Highway Trust Fund.
Transportation Planning and Programming Collection
Anchor: #i1007350
minimum allowable percent density
Minimum allowable percent density is the density allowed on a given black base material based on a sample of freshly gyrated road mix.
Anchor: #i1002140
minimum guarantee
A minimum guarantee is an apportionment of federal funds that ensures each state receives a specific share of the aggregate funding for major highway programs, with every state guaranteed at least a 90.5 percent return on its percentage share of contributions to the Highway Account of the Highway Trust Funds.
Transportation Programming and Scheduling Manual
Anchor: #i1002142
minimum path
The minimum path is the shortest route along links of the network in terms of travel time between two zones.
Traffic Data and Analysis Manual
Anchor: #i1007376
minimum remote quantity
Minimum remote quantity is the minimum quantity of any given material eligible for sampling in a specific remote location.
Anchor: #i1007391
minimum standard quantity
Minimum standard quantity is the minimum quantity of any given material eligible for sampling in a local city). MAT establishes the MSQ for each material to be sampled, based on typical lot size, load size and convenience of sampling and testing.)
Anchor: #i1007406
minimum turning path
The minimum turning path is the path of the outermost point on a vehicle making its sharpest turn.
Anchor: #i1007416
minimum turning radius
The minimum turning radius is the radius of the minimum turning path of the outside of the outer front tire.
Anchor: #i1007426
minor category
Minor category is a 20-character field of one or more words that further defines the type of item.For major category item “bolt,” minor categories could be “hex” or “carriage.”
Materials And Supplies Management System Manual
Anchor: #i1007442
minor equipment
Minor equipment is any non-consumable implement, tool, or device having a unit cost over $1000. Items installed in a permanent manner on highways, rights of way, bridges, and buildings are not considered equipment.
Purchasing Manual
Anchor: #i1007457
Minor Equipment Operating System
The Minor Equipment Operating System is part of the Equipment Operating System (EOS). MEOS deals with minor equipment.
Anchor: #i1007472
Minor Equipment System
Minor Equipment System is the automated system for electronically recording, maintaining and reporting information about reportable personal property. It is managed by the General Services Division.
Anchor: #i1007487
minor, state-funded project
Projects funded entirely with state funds consisting of minor work such as preventative maintenance or restoration projects.
Anchor: #i1007497
minority (populations)
Populations that are under represented in a community, compared to the whole.
Anchor: #i1007517
minute order
A minute order is a formal expression of opinion, direction, or intent voted by the Texas Transportation Commission to approve various actions by TxDOT.
Anchor: #i1007527
Miramo is the name of software which interprets command files from CMCS to merge PDF documents to create the proposal.
Anchor: #i1007537
Miscellaneous Contract Information System
The Miscellaneous Contract Information System is a computerized management information system used to monitor and control miscellaneous contracts for expenditures which are not construction/maintenance or purchase of service contracts which get entered into CIS/CMCS or APS.
Contract Management Manual
Anchor: #i1007557
Miscellaneous Contract Information System (MCIS) Segment 41
MCIS Segment 41
MCIS Segment 41 is the department’s automated program used to enter, issue, and track payments made to the performing entity.
Contract Management Manual
Anchor: #i1007577
mission critical information
Mission critical information is information that is defined by the agency to be essential to the agency’s function(s).
Information Security Manual
Anchor: #i1007592
Mitigation is a technique or means of reducing impacts to resources or to the natural environment. Mitigation includes avoiding the impact altogether by not taking a certain action or parts of an action; minimizing impacts by limiting the degree or magnitude of the action and its implementation; rectifying the impact by repairing, rehabilitating, or restoring the affected environment; reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action; or compensating for the impact by replacing or providing substitute resources or environments.
Environmental Manual
Anchor: #i1007606
mobile home
Mobile homes include manufactured homes and recreational vehicles used as residences.
Right of Way Manual
Anchor: #mobility_management
mobility management
Mobility Management consists of short-range planning and management activities and projects for improving coordination among public transportation and other transportation-service providers carried out by a recipient or subrecipient through an agreement entered into with a person, including a government entity, under 49 U.S.C. Chapter 53 (other than Section 5309). Mobility management does not include operating public transportation services.
Public Transportation Collection
Anchor: #i1007630
mobility projects
Mobility projects are transportation projects that add additional lanes to an existing facility and which have a length of at least one mile.
Transportation Planning and Programming Collection
Anchor: #i1007644
Mode is a security implementation stages used by CA-TOP SECRET which determine the way in which resource access requests are processed. In FAIL mode, attempted access to resources not authorized to the user will not be permitted.
Anchor: #i1007654
mode choice
Mode choice is the physical means of transportation used for a trip. The modes available include auto/truck/van driver, auto/truck/van passenger, public transit, bicycle, school bus, walking, taxi, commercial vehicle and other. Generally, trips are aggregated for similar modes such as private vehicle driver, private vehicle passenger, public transit, school bus, bicycle, walk, taxi, commercial vehicle and other.
Traffic Data and Analysis Manual
Anchor: #i1007668
Modified Delphi Method
The Modified Delphi Method is a method of prognostication based on an interactive feedback process and producing a consensus opinion of a number of experts in a given field.
Traffic Safety
Anchor: #i1007678
Modulus is a flexible pavement backcalculation system for computing the modulus of elasticity of each layer in a pavement system using input from the �falling weight deflectometer. The program also contains routines to assess structural strength and analyze remaining life, both of which can be used as the first step in the pavement rehabilitation design process.
Pavement Design Manual
Anchor: #i1007696
modulus of elasticity
The modulus of elasticity is the stress required to produce unit strain, which may be a change of length (Yount’s modulus); a twist or shear (modulus of rigidity), or a change of volume (bulk modulus), expressed in dyes per square centimeter.
modulus of subgrade reaction
Modulus of subgrade reaction (k) is Westergaard’s modulus of subgrade reaction for use in rigid pavement design: the load in psi on a loaded area of the roadbed soil or subbase divided by the deflection in inches of the roadbed soil or subbase, psi/in.
Pavement Design Manual
Anchor: #i1007726
Mohr’s Diagram
Mohr’s Diagram is a graphical construction of combined principal stresses in static equilibrium.
Manual of Testing Procedures
Mohr’s Failure Circle
Mohr’s Failure Circle is a stress circle constructed from major and minor principal stresses of the specimen at failure.
Manual of Testing Procedures
Anchor: #i1007754
Mohr’s Failure Envelope
Mohr’s Failure Envelope is the common tangent to a series of failure circles constructed from different pairs of principal stresses required to fail the material. The envelope is generally curved, its curvature depending on the factors related to the characteristics of the material.
Manual of Testing Procedures
Anchor: #i1007768
moist cabinet
A moist cabinet is a compartment storage facility of moderate dimensions with controlled temperature and relative humidity.
Anchor: #i1007778
moist room
A moist room is a “walk-in” storage facility with controlled temperature and relative humidity. Commonly called a fog room when the prescribed relative humidity is achieved by the atomization of water.
Anchor: #i1007788
moisture content
Moisture content refers to the percent of moisture = wt of water X 100 — wt of dry soil — Where wt of water = wet weight of soil - dry weight of soil, using Test Method TEX-103-E.
Anchor: #i1007798
moisture preservation
Moisture preservation is the use of “Blanket sections” with wide shoulders consisting of granular materials, stabilized soils, or where asphalt membranes are applied for this purpose.
Manual of Testing Procedures
Anchor: #i1007812
moment of inertia
Moment of inertia is a function of some property of a body or figure - such as weight, mass, volume, area, length, or position, equal to the summation of the products of the elementary portions by the squares of their distances from a given axis.
Anchor: #i1007822
Monitor means to assess the quality of performance over time at TxDOT for internal control purposes.
Internal Audit Manual
monitored cylinder
Monitored cylinder is the match cure cylinder, other than the control cylinder, which has the temperature of the specimen monitored during the curing period.
Manual of Testing Procedures
Anchor: #i1007851
monitored temperature profile
Monitored temperature profile is a graph generated by the match cure system representing Time versus Temperature of the monitored cylinder.
Manual of Testing Procedures
Anchor: #i1007865
Monitoring is the internal control process that assesses the quality of performance over time at TxDOT.
Internal Audit Manual
Anchor: #i1007905
A monument is any object or collection of objects (physical, natural, artificial) that indicates the position on the ground of a survey station.
GPS User’s Manual
Anchor: #i1007915
  1. Mosaic refers to an assembly of individual aerial photographs matched together so as to form a continuous photographic view of an area.
  2. Mosaic is a program that uses a graphical user interface to present World Wide Web information.
  3. Information Technology and Services Manual
Anchor: #i1007960
Motor Carrier Division
The Motor Carrier Division issues oversize/overweight load permits and temporary 72/144-hour registrations. It is also responsible for motor carrier insurance filings, vehicle storage facilities licensing and interstate movement authority.
Inside TxDOT
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motor vehicle
A motor vehicle is any self-propelled device powered by an internal combustion engine and designed to operate with four or more wheels in contact with the ground, in or by which a person or property is or may be transported.
Equipment Manual
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Motor Vehicle Division
The Motor Vehicle Division licenses new-car dealers, distributors, converters and manufacturers doing business in Texas. The division also enforces the Lemon Law.
Inside TxDOT
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Motorist Services (former SMT)
Motorist Services is one of TxDOT's seven functional areas. The Assistant Executive Director of Motorist Services has oversight of the Automobile Theft Prevention Authority Office (ATPA), the Motor Carrier Division, the Vehicle Titles and Registration Division, the Motor Vehicle Division, and the Travel and Information Division.
Anchor: #i1008113
motorized equipment
Motorized equipment includes, but is not limited to, automobiles, trucks, trailers, aircraft, motor graders, rollers, tractors, power mowers, weed eaters, and other power equipment used in connection with construction/maintenance of state-owned property.
Occupational Safety Manual
Anchor: #i1008127
mountable curb
A mountable curb is one that can be readily climbed by a moving vehicle.
Anchor: #i1008137
mounting height
Generally the vertical distance between the base of the pole and the luminaire.
Highway Illumination Manual
Anchor: #i1008152
MTRX code
The MTRX code is the last two characters of the project number in FIMS Segment 79 which relates to the federal fund source.
Finance Division
Anchor: #i1008167
Mulch is plant residues, natural, artificial, or other materials placed on exposed earth surfaces to reduce erosion, promote plant growth, conserve moisture, control the occurrence of unwanted vegetation, and to minimize temperature fluctuation.
Anchor: #i1008177
multi-function vehicle
Multi-function vehicle is a vehicle-mounted, nondestructive measurement system for pavement surface evaluations which collects, processes, and stores information on ride, rut, and distance traveled in real time at highway speeds. The system controls two to three video recorders which store video from pavement and right-of-way cameras.
Pavement Design Manual
multilane highway
A multilane highway is a highway with four or more lanes.
Multimodal Operations Office (former)
The Multimodal Operations Office is responsible for project planning, policy development and operations pertaining to water, rail, bicycles and pedestrian transportation, and serves as the non-federal sponsor of the Gulf Intracoastal Waterway. In May of 1998, MMO became a section of the Transportation Planning and Programming Division.
Inside TxDOT
Anchor: #i1008226
Multimodal Transportation (former SMT)
Multimodal Transportation is one TxDOT's seven functional areas. The Assistant Executive Director for Multimodal Transportation has oversight of the Multimodal Operations Office, the Aviation Division and the Public Transportation Division.
Anchor: #i1008286
multiple-use agreement
An agreement (license) for the use of highway right of way for other than highway purposes by political subdivisions, state and federal agencies.
Anchor: #i1008296
Multiple Virtual Storage Integrity Committee
The Multiple Virtual Storage Integrity Committee is a comprised of members of Operating Systems Software Section and a representative from Central Information Security.
Anchor: #i1008311
Multiplexing is sending multiple signals or streams of information on a carrier at the same time in the form of a single, complex signal and then recovering the separate signals at the receiving end.
Information Security Manual
Anchor: #i1008326
multiprogramming variable number of tasks
A multiprogramming variable number of tasks is a feature of large computers that allows more efficient operation by having multiple programs (tasks) present and operating in the mainframe computer simultaneously.
Anchor: #i1008371
multipurpose form
The multipurpose form is an insurance form filled out by employees to make changes in insurance coverage.
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