Roadway Design Manual (RDW) TWLTL
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- Roadway Design Manual
- Manual Notice 2018-1
- Chapter 1 — Design General
- Section 1 — Overview
- Section 2 — Design Exceptions, Design Waivers, Design Variances, and Texas Highway Freight Network (THFN) Design Deviations
- Section 3 — Schematic Layouts
- Section 4 — Additional Access to the Interstate System
- Section 5 — Preliminary Design Submissions
- Section 6 — Maintenance Considerations in Design
- Chapter 2 — Basic Design Criteria
- Chapter 3 — New Location and Reconstruction (4R) Design Criteria
- Section 1 — Overview
- Section 2 — Urban Streets
- Section 3 — Suburban Roadways
- Section 4 — Two-Lane Rural Highways
- Section 5 — Multi-Lane Rural Highways
- Section 6 — Freeways
- Overview
- Basic Design Criteria
- Access Control
- General
- Mainlane Access
- Frontage Road Access
- Driveways and Side Streets
- Methods
- Designation
- Design
- Mainlanes
- Design Speed
- Level of Service
- Lane Width and Number
- Shoulders
- Medians
- Outer Separation
- Crossing Facilities
- Vertical and Horizontal Clearance at Structures
- Frontage Roads
- Function and Uses
- Planning
- Design Speed on Frontage Roads
- Capacity and Level of Service
- Frontage Road Design Criteria
- Conversion of Frontage Roads from Two-Way to One-Way Operation
- Interchanges
- Three Leg Interchanges
- Four Leg Interchanges
- Diamond Interchanges
- Cloverleaf Interchanges
- Directional Interchanges
- Ramps and Direct Connections
- General Information
- Design Speed
- Horizontal Geometrics
- Distance Between Successive Ramps
- Cross Section and Cross Slopes
- Sight Distance
- Grades and Profiles
- Metered Ramps
- Collector-Distributor Roads
- Frontage Road Turnarounds and Intersection Approaches
- Section 7 — Freeway Corridor Enhancements
- Section 8 — Texas Highway Freeway Network (THFN)
- Chapter 4 — Non-Freeway Rehabilitation (3R) Design Criteria
- Chapter 5 — Non-Freeway Resurfacing or Restoration Projects (2R)
- Chapter 6 — Special Facilities
- Chapter 7 — Miscellaneous Design Elements
- Chapter 8 — Mobility Corridor (5 R) Design Criteria
- Appendix A — Longitutinal Barriers
- Section 1 — Overview
- Section 2 — Barrier Need
- Section 3 — Structural Considerations of Guard Fence
- Section 4 — Placement of Guard Fence
- Section 5 — End Treatment of Guard Fence
- Section 6 — Determining Length of Need of Barrier
- Section 7 — Example Problems
- Section 8 — Median Barrier
- Section 9 — Emergency Crossovers
- Appendix B — Treatment of Pavement Drop-offs in Work Zones
- Appendix C — Driveway Design Guidelines