• ♦Manual Notice 2005-1
• ►1. Texas Reference Marker System
  • ►1. Introduction to TRM
    • ♦What is TRM?
    • ♦Development of the TRM System
    • ♦Documents Establishing TRM
    • ♦Benefits of TRM
    • ♦What This Manual Provides
  • ►2. Key Points to Know
    • ♦Responsibilities and Definitions for TRM
    • ♦Official TRM Location Key
  • ♦3. Data Maintenance Responsibility
  • ►4. Establishing a Route
    • ♦Summary
• ►2. Feature Characteristics
  • ►1. Key Points to Know
    • ♦Identifying Characteristics
    • ♦Defined Characteristics
  • ►2. ADABAS Feature Characteristics
    • ♦Column Headers
    • ♦Feature Names
    • ♦Data Classes
    • ♦Field Size
    • ♦Roadbed Classes
    • ♦Maintenance Responsibilities
  • ►3. ADABAS Matrix
    • ♦Why Use the ADABAS Matrices?
    • ♦ADABAS Legend
    • ♦TPP ADABAS Matrix
    • ♦District ADABAS Matrix
    • ♦TPP/District ADABAS Matrix
    • ♦Construction Division ADABAS Matrix
    • ♦TRM System ADABAS Matrix
• ►3. TRM Operating Environment
  • ►1. Key Points to Know
    • ♦Texas Reference Marker System
    • ♦Authorized Users of the TRM System
    • ♦Definitions
    • ♦Logging On the Operating System
    • ♦Logging Off the Operating System
  • ►2. Entry Screen Features
    • ♦TRM Data Entry Screens
    • ♦Description of Screen Components
    • ♦Function Keys
    • ♦Negative Conversion Window
    • ♦Numeric Entry Fields
    • ♦Online Help Facilities
  • ►3. TRM Update Functions
    • ♦Which Update-Code to Use?
    • ♦Functions per Data Classification
    • ♦TRM Update-Code
  • ►4. TPP Database Maintenance
    • ♦Input to Begin
    • ♦Update Functions
  • ►5. District Database Maintenance
    • ♦Input to Begin
    • ♦Update Functions
  • ►6. Construction Division Database Maintenance
    • ♦Input to Begin
    • ♦Update Functions
  • ►7. TRM Query
    • ♦How to Query the TRM System
    • ♦Length Data Display
• ►4. ARI & Report Processing
  • ►1. Automated Road Inventory Diagram
    • ♦What is an ARI?
    • ♦TRM System ARI Processing
    • ♦ROSCOE ARI Processing
    • ♦Generating an ARI Diagram
    • ♦Editing an ARI Diagram
    • ♦Plotting an ARI Diagram
    • ♦Generating Another ARI Diagram
  • ►2. Available TRM Reports
    • ♦About This Section
    • ♦Emergency Closings
    • ♦Routes Opened by Districts
    • ♦District Required Elements
    • ♦TPP Required Elements
    • ♦Transferred Routes
    • ♦Mile Point-Reference Marker Equivalency
    • ♦TRM Data Export
  • ►3. Report Processing
    • ♦Printing a Report
    • ♦TRM Report Processing
    • ♦ROSCOE Report Processing
    • ♦ODVS Report Processing
    • ♦TRM Data Export Processing
• ►5. Routes
  • ►1. Key Points to Know
    • ♦Why Add, Delete, or Update a Route?
    • ♦This Chapter
    • ♦Office of Responsibility
    • ♦Process from Letting to Final Input
    • ♦Distance From Origin Defined
    • ♦Distance Between Markers Defined
    • ♦Placeholder Markers 0000 and 9999
  • ►2. Adding New Routes
    • ♦New Route Defined
    • ♦Input—Add New Route
  • ►3. Adding Contiguous Route Segments
    • ♦Contiguous Route Defined
    • ♦Input—At Beginning of Route
    • ♦Input—At End of Route
    • ♦Input—To Beginning of Roadway Gap
    • ♦Input—To End of Roadway Gap
  • ►4. Adding Non-Contiguous Segments
    • ♦Non-Contiguous Route Defined
    • ♦Input—Before Beginning of Route
    • ♦Input—After End of Route
    • ♦Input—Within Roadway Gap
  • ►5. Adding Gap Filler Segments
    • ♦Gap Filler Segment Defined
    • ♦Determining Length of Gap Filler
    • ♦Input—Add Gap Filler
  • ►6. Redesignating Routes
    • ♦Route Redesignation Defined
    • ♦Important Redesignation Caution
    • ♦Definitions
    • ♦Determining the Redesignation Situation
    • ♦Caveats to All Redesignations
    • ♦Input—Situation A: Entire Route to New Designation
    • ♦Input—Situation B: Partial Route Section to New Designation
    • ♦Input—Situation C: Contiguous Segment to Beginning of Existing Route
    • ♦Input—Situation D: Contiguous Segment to End of Existing Route
    • ♦Input—Situation E: Contiguous Route Segment to Fill Gap
  • ►7. Deleting Routes
    • ♦When to Delete Route
    • ♦Input—Delete Complete or Partial Route
  • ►8. Transferring Routes
    • ♦When to Transfer Route
    • ♦Input—Transfer Complete or Partial Route
• ►6. Highway Status
  • ►1. Key Points to Know
    • ♦Importance of Highway Status
    • ♦Offices of Responsibility
    • ♦Definitions
  • ►2. Highway Status Updates
    • ♦Other than Emergency Route Closings Status
    • ♦Input—Other than Emergency Route Closings
    • ♦Emergency Route Closings Status
    • ♦Input—Emergency Route Closings
• ►7. Reference Markers & Coordinates
  • ►1. Reference Markers — Key Points to Know
    • ♦Reference Marker Defined
    • ♦This Chapter
    • ♦Offices of Responsibility
    • ♦Reference Marker Numbering System
    • ♦History
    • ♦Definitions
  • ►2. Reference Marker Installation Procedures
    • ♦Installation
    • ♦Location
    • ♦Reference Marker Specifications
    • ♦Uniform Posting Procedures
    • ♦Highway Hierarchy
    • ♦Developing a New Route in Sections
    • ♦Joining Two Different Routes
    • ♦Extending a Route
    • ♦Realigning a Route
    • ♦Business Routes and Spurs
    • ♦Circumferential Routes
    • ♦Moving an Existing Reference Marker
    • ♦Concurrent Routes
  • ►3. Reference Marker Input Instructions
    • ♦Reference Marker Constraints
    • ♦Input—Reference Markers
  • ►4. Marker Coordinates — Key Points to Know
    • ♦Marker Coordinates Defined
    • ♦Office of Primary Responsibility
    • ♦Definitions
    • ♦Input—Marker Coordinates
    • ♦Geographic Information System
    • ♦Global Positioning System
• ►8. Roadbeds
  • ►1. Key Points to Know
    • ♦When to Establish Roadbeds
    • ♦Offices of Responsibility
    • ♦Definitions
  • ►2. Roadbeds
    • ♦Adding Roadbeds
    • ♦Input—Add New Roadbeds
    • ♦Input—Delete Non-Mainlane Roadbeds
    • ♦Input—Update Roadbeds
• ►9. Linked Route Segments
  • ►1. Key Points to Know
    • ♦Linked Route Defined
    • ♦Three Types of Links
    • ♦Office of Responsibility
    • ♦Definitions
    • ♦Linked Route vs. Roadway Gap
    • ♦Determining the Link Points
    • ♦The Signed Highway/Secondary Route
    • ♦The Linking Signed Highway/Primary Route
    • ♦Ascending Marker Direction
    • ♦Descending Marker Direction
  • ►2. Concurrent Route Segments
    • ♦Concurrent Route Defined
    • ♦Input—Add to Gap or End of Route
    • ♦Input—Delete Within or at End of Route
    • ♦Input—Update Within or at End of Route
    • ♦Input—Add to Beginning of Route
    • ♦Input—Delete from Beginning of Route
    • ♦Input—Update to Beginning of Route
  • ►3. On-System Link Segments
    • ♦On-System Link Defined
    • ♦Input—On-System Link
  • ►4. Off-System Link Segments
    • ♦Off-System Link Defined
    • ♦Input—Off-System Link
• ►10. Pavement Data
  • ►1. Key Points to Know
    • ♦Pavement Data Defined
    • ♦Offices of Responsibility
  • ►2. Mainlane Centerline + Frontage Road Attributes
    • ♦Highway Design Data
    • ♦Input—Mainlane Centerline + Frontage Road Attributes
  • ►3. Centerline Attributes
    • ♦Direction of Travel
    • ♦ROW Width Data
    • ♦Input—Centerline Attributes
  • ►4. Left/Right Mainlane Attributes
    • ♦Median Width and Type Data
    • ♦Definitions
    • ♦Input—Left/Right Mainlane Attributes
  • ►5. Roadbed-Specific Attributes
    • ♦Other Pavement Data
    • ♦Definitions
    • ♦Input—Roadbed-Specific Attributes
• ►11. Features
  • ►1. Key Points to Know
    • ♦Feature Data Defined
    • ♦TRM Features/Responsible Office Table
    • ♦Definitions
    • ♦General Feature Constraints
  • ►2. Intersecting Roadways
    • ♦On-System and Off-System Intersections Defined
    • ♦Definitions
    • ♦Input—On-System Intersecting Roadways
    • ♦Off-System Intersecting Roadways
    • ♦Input—Off-System Intersections
  • ►3. TPP Feature Input Instructions
    • ♦About This Section
    • ♦Boundaries
    • ♦Railroad Crossings
    • ♦Structures
  • ►4. TPP/District Feature Input Instructions
    • ♦About This Section
    • ♦Ferries
    • ♦Roadside Features
    • ♦Tunnels
  • ►5. District Feature Input Instructions
    • ♦About This Section
    • ♦Cattle Guards
    • ♦Connectors
    • ♦Crossovers
    • ♦Culverts
    • ♦Gates
    • ♦Overhead Signs
    • ♦Pedestrian Passageways
    • ♦Pipelines
    • ♦Ramps
    • ♦Streams
    • ♦Telephone Lines
    • ♦Transmission Lines
    • ♦Turnarounds
    • ♦Water Lines
  • ►6. Features Not Classified
    • ♦Catch-All Category
    • ♦Other Intersecting Features not Classified
    • ♦Other Roadway Features Not Classified
• ►12. Administrative Data
  • ►1. Key Points to Know
    • ♦Administrative Data Defined
    • ♦Administrative Data Classes
    • ♦Offices of Responsibility
  • ►2. Continuous Length Centerline Attributes
    • ♦Responsibilities
    • ♦Definitions
    • ♦Input—Administrative Data
    • ♦Highway Performance Monitoring System Current Id
    • ♦Input—Highway Performance Monitoring System Id
  • ►3. Non-Continuous Length Attributes
    • ♦Secondary Routes Defined
    • ♦Secondary Route Designations
    • ♦Input—Secondary Routes
• ►13. Geometric Data
  • ►1. Key Points to Know
    • ♦Geometric Data Defined
    • ♦Office of Responsibility
    • ♦Geometric Data Attributes
    • ♦Definitions
  • ►2. Baseline Bearing Data
    • ♦Baseline Bearing Defined
    • ♦Definitions
    • ♦Input—Baseline Bearing
  • ►3. PI Curve Data
    • ♦PI Curve Defined
    • ♦Input—PI Curves
  • ►4. Normal Curve Data
    • ♦Normal Curve Defined
    • ♦Input—Normal Curves
  • ►5. Spiral Curve Data
    • ♦Spiral Curve Defined
    • ♦Input—Spiral Curves
• ▼14. Texas Highway Designation Files
  • ►1. What is the Highway Designation File?
    • ♦Description
  • ►2. Search Instructions
    • ♦Begin here
  • ►3. How Highways are Designated
    • ♦Begin here
  • ►4. Highway Designation File Glossary
    • ♦Begin here
  • ►5. County/District List
    • ♦Begin here
• ►15. Error Messages
  • ►1. Understanding Error Messages
    • ♦What This Chapter Does
    • ♦Error Message Types
    • ♦About Message Variables
  • ♦2. Error Messages
• ►A. Traffic Data & Terms
  • ♦1. Query Processing
  • ♦2. Definitions

Chapter 14: Texas Highway Designation Files

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Section 1: What is the Highway Designation File?

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Description

The Texas Highway Designation Files (THDF) contain highway designation history since September 1939, when the Transportation Commission of that time approved the General Redesignation of the State Highway System.

The THDF is located on the TPP Intranet and Internet Websites, as well as the TxDOT homepage. You can research any designated highway in Texas by the highway system (i.e., Interstate Highway, Farm to Market Road) and the highway’s number.

Also included on the website are:

• The description of the highway designation process is located on the highway search page
• The glossary contains explanations of terms specific to the Highway Designation Files
• The historical facts pages contain information about the history of TxDOT and the highways
• The district/county list contains all 254 Texas counties with the corresponding district numbers in parentheses.