Sign Guidelines and Applications Manual: Flood-Related Weather Conditions

♦Manual Notice 2023-1
►1. Introduction
►2. Sign Location
- ►1. Overview
  - ♦Requirements of Effective Signs
  - ♦Basic Considerations
  - ♦More Information
- ►2. Determining Location
  - ♦Determination of Need
  - ♦Field Review
  - ♦Physical Features of Sign Placement
  - ♦Back to Back Mounting
  - ♦Mounting Height
  - ♦Lateral Clearance
  - ♦Rural Intersections
►3. Sign Materials and Supports
- ►1. Roadside Sign Supports
  - ♦Introduction
  - ♦Foundations
  - ♦Types of Supports
- ►2. Sign and Substrate Structure
  - ♦Substrate
  - ♦Structural Support System
  - ♦Overhead Sign Walkways
- ►3. Retroreflectorization
- ►4. Sign Legends
  - ♦Introduction
  - ♦Font Types
  - ♦Symbols
  - ♦Application Methods
- ►5. Sign Identification Decal
  - ♦Decal Required
  - ♦Purpose
  - ♦Use of Decal
  - ♦Fabrication Coding
  - ♦Installation Coding
- ►6. Storage and Transport
  - ♦Storage
  - ♦Transport
- ►7. Special Sign Applications
  - ♦Flashing Beacons Attached to Sign
  - ♦Portable Changeable Message Signs
  - ♦Dynamic Message Signs
  - ♦Bilingual Signs
►4. Sign Maintenance
- ►1. Overview
  - ♦Introduction
  - ♦Maintenance in Cities
  - ►Importance of Sign Maintenance
- ►2. General Guidelines
  - ♦Sign Visibility
  - ♦When to Replace Signs
  - ♦Positioning Replaced Signs
  - ♦Aluminum Sign Recycling
  - ♦Sign Warranty
- ►3. Sign Inspection
  - ♦General
  - ►Sign Retroreflectivity
  - ♦Inspection Report
- ►4. Roadside Sign Supports
  - ♦Introduction
  - ♦Keeping Posts Straight
  - ♦Breakaway Posts
  - ♦Straightening Bent Posts
  - ♦I-beam Supports
  - ♦Repair of Large, Ground-Mounted Guide Sign Supports
- ►5. Overhead Signs
  - ♦Introduction
  - ♦Special Equipment
  - ♦Supports
  - ♦Walkway
►5. Regulatory Signs
- ►1. Overview
  - ♦Introduction
- ►2. STOP and YIELD Signs
- ►3. Speed Limit Sign
  - ♦Speed Limit Sign
  - ♦Reduced Speed Limit Ahead
- ►4. Handicapped Parking
- ►5. WEIGHT LIMIT Sign
  - ♦Weight Limit Sign
- ►6. Truck Routes
  - ♦Introduction
  - ♦Authority
  - ♦Proposals
  - ♦Route Guidelines
  - ♦Signing Guidelines
  - ♦Process Summary
  - ♦Restricted Truck Lanes
- ►7. Non-Radioactive Hazardous Materials Routing
  - ♦Introduction
  - ♦Authority
  - ♦Terminology
  - ♦Who Initiates the Process?
  - ♦Financial Responsibility
  - ♦Establishing or Revising an NRHM Route
  - ♦Route Signing Guidelines
- ►8. Restricted Truck Lanes
  - ♦Introduction
  - ♦Authority
  - ♦Terminology
  - ♦Who Initiates the Process?
  - ♦Financial Responsibility
  - ♦Establishing a Lane Restriction
  - ►Single City or County Initiated Process
  - ♦TxDOT Initiated Process
  - ♦Example Signing for Left Lane Restriction
  - ♦Example Signing for Left Lane Restriction Plaques
- ►9. Exclusive Lanes
  - ♦Authority
  - ♦Guidance
- ►10. Left Lane for Passing Only
  - ♦Introduction
  - ♦Signing Guidelines
▼6. Warning Signs
- ►1. Overview
  - ♦Introduction
- ►2. T-Intersections
  - ♦Introduction
  - ♦Advance Warning
  - ♦At the Intersection
  - ♦Use of Large Arrow Signs
- ►3. Vertical Clearance
  - ♦Introduction
  - ♦Signs
  - ♦When to Measure
  - ♦How to Measure Minimum Vertical Clearance
  - ♦Signing Minimum Vertical Clearance
  - ♦Reporting Measurements
  - ♦Updating Vertical Clearance Signing
- ►4. Advisory Speeds
  - ♦Advisory Speed Sign
  - ♦Curve Symbol
  - ♦Turn Symbol
  - ♦Advisory Exit Speed Sign
- ▼5. Flood-Related Weather Conditions
  - ♦Flood-Related Weather Conditions Sign
  - ♦Flood Gauge Assembly
- ►6. Signing for Gravel Roads
  - ♦Introduction
  - ♦Signing Guidelines
►7. Guide Signs
- ►1. Overview
  - ♦Introduction
  - ♦Purpose of Guide Signs
  - ♦Use of Brown Background
  - ♦Use of Blue Background
- ►2. Concurrent Routes
  - ♦Avoiding Unnecessary Concurrent Routes
  - ♦Concurrent Route Confirmation Assemblies
- ►3. Overhead Street Name Signs
  - ♦Recommended Use
  - ♦Letter Size
  - ♦Dimensions
- ►4. Signing for County Roads
  - ♦Introduction
  - ♦Eligible County Roads
  - ♦Signing Standards
  - ♦When Warning Signs are Used
  - ♦Signs Provided by County
  - ♦Existing Signs
- ►5. Interstate Highway Numbering
  - ♦Original Numbering System
  - ♦Current Numbering System
  - ♦Loops
- ►6. Special Route Markers
  - ♦Evacuation Route Signing (EM-1 series)
  - ♦Texas Travel Trails (Texas Heritage Trails Program)
  - ♦Texas Travel Trail Signing Standards
- ►7. Destination and Distance Signing
  - ♦Introduction
  - ♦Combination of Routes Between Major Destinations
  - ♦Additional Distance Signing
  - ♦Spacing Additional Destination and Distance Signs
- ►8. Destination Signing for Border Cities in Mexico
  - ♦Introduction
  - ♦Types of Border Crossings
  - ♦Sign Content
  - ♦Sign Placement
- ►9. Traffic Generators
  - ♦Signing for Traffic Generators
  - ♦Local Authority Requests for Traffic Generator Signs
  - ♦Signing for Traffic Generator Within the City Limits
  - ♦Commercial Names
  - ♦Seasonal and Special Events Signing
  - ♦Airports
  - ♦Cemeteries
  - ♦Veterans Facilities
  - ♦Emergency Medical Services
  - ♦Eligibility Requirements for Licensed General Hospitals
  - ♦Sign Design
  - ♦Sign Placement
  - ♦Eligibility Requirements for Signing of Licensed Free-Standing Emergency Medical Care Facilities
  - ♦Sign Design
  - ♦Sign Placement
  - ♦Exemptions from Licensing Requirements for Free-Standing Emergency Medical Care Facilities
- ►10. Elected Officials
  - ♦Offices of Elected US and State Officials
- ►11. State and National Parks
  - ♦Introduction
  - ♦Sign Placement
- ►12. Public Beaches
  - ♦Introduction
  - ♦Access Roads
  - ♦Parking Lots
  - ♦Funding of Signs
- ►13. Wildlife Viewing Areas
  - ♦Introduction
  - ♦Signing Standards
- ►14. General Services Signs
  - ♦Introduction
  - ♦Expanded Use on Conventional Highways
  - ♦Verification
- ►15. Travelers’ Information Radio Signs
  - ♦Background
  - ♦Signing
- ►16. Memorial Designated Highways and Structures
  - ♦Introduction
  - ♦Records Management
  - ♦Designation Through Local Action
  - ♦Designation Through Legislative Action
  - ♦Policy Guidance for Signing
- ►17. Street-Named Highways
  - ♦Introduction
  - ♦Legal Basis for Naming
  - ♦Records Management
  - ♦Designation by a City
  - ♦Payment for Street-Named Signs
  - ♦Signing Practices
- ►18. Historic Routes
  - ♦Introduction
  - ♦Legal Basis for Naming and Signing
  - ♦Records Management
  - ♦Agreement with County
  - ♦Sign Placement and Standards
- ►19. Historical Markers
  - ♦Introduction
  - ♦Historical Marker Process Overview
  - ♦Marker Placement
  - ♦Design and Installation of Markers
  - ♦Maintenance of Markers
  - ♦Marker Numbers
  - ♦Booklet Available
  - ♦Advance and Directional Signing Standards
  - ♦Advance and Directional Sign Details
- ►20. City Limit Signs
  - ♦Introduction
  - ♦Requirements
  - ♦Freeways and Conventional Roads
  - ♦Population
- ►21. County Line Signs
  - ♦Expressways and Freeways
  - ♦Placement
- ►22. WELCOME TO TEXAS Signs
  - ♦Introduction
  - ♦Standards
  - ♦Placement
- ►23. Alternative Fuel Facilities
  - ♦Introduction
  - ♦General Eligibility Requirements
  - ♦Sign Placement
  - ♦Sign Design
- ►24. Accessibility Signing for Rest and Picnic Areas
  - ♦Introduction
  - ♦Use of the Accessibility Plaque
  - ♦Historic Picnic Areas
►8. Miscellaneous Signs
- ►1. Overview
  - ♦Introduction
  - ♦General Guidelines
- ►2. Temporary Signs and Banners Not Placed by TxDOT
  - ♦Introduction
  - ♦Authorized Temporary Signs
  - ♦Political Campaign Signs
  - ♦Unauthorized Signs
- ►3. Fatality Memorial Markers and Signs
  - ♦Introduction
- ►4. Adopt a Highway Signs
  - ♦Introduction
  - ♦Signing Guidelines
  - ♦Sign Details
  - ♦Traffic Control During Litter Pickup
- ►5. Rest Area Signs
  - ♦DWI - YOU CAN’T AFFORD IT (D72T) Sign
- ►6. Municipal and Road Utility District Signs
  - ♦Introduction
  - ♦Responsibility
  - ♦Signing Guidelines
- ►7. City Pride Signs
  - ♦Introduction
  - ♦Program Application and Approval
  - ♦Agreement
  - ♦Cooperation with Contractors
  - ♦Sign Installation and Maintenance
  - ♦Sign Removal or Relocation
  - ♦Participation of Civic Organizations
  - ♦Sign Specifications
  - ♦Sign Placement
  - ♦Existing Signs
  - ♦Program Operation
  - ♦Examples of Signs Under the CPSP
  - ♦Other Structures
- ►8. Cell Phone Use Prohibited Sign
- ►9. Burn Ban Sign
  - ♦Burn Ban Sign
- ►10. Recharging Zones and Watershed Boundaries Signs
  - ♦Introduction
  - ♦Edwards Aquifer
- ►11. Prohibiting Fireworks in Rest Areas
  - ♦Introduction
  - ♦Process

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Section 5: Flood-Related Weather Conditions

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Flood-Related Weather Conditions Sign

Flood-related weather condition signs may be used on roadway sections that are subject to frequent flooding. The following warning signs are addressed in Chapter 2C of the Texas Manual on Uniform Traffic Control Devices (TMUTCD), Section 2C.35.

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ROAD MAY FLOOD (W8-18) - used on a roadway section with frequent flooding.

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WATER CROSSING (W8-18aT) - used on a roadway section (dip or ford) normally underwater; not where water occasionally crosses roadway due to heavy rain or flash floods.

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WHEN FLOODED TURN AROUND DON'T DROWN (W8-18bT) - used as an additional sign in advance of warning signs ROAD MAY FLOOD (W8-18) or WATER CROSSING (W8-18aT).

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Flood Gauge Assembly

The flood gauge assembly (FGA) consists of the FLOOD GAUGE (W8-19aTP) plaque and Depth Gauge (W8-19) sign. The FGA assembly should be used in conjunction with signs ROAD MAY FLOOD (W8-18), WATER CROSSING (W8-18aT) or WHEN FLOODED TURN AROUND DON'T DROWN (W8-18bT).

FGA details are shown on the Traffic Engineering Standard Sheets.