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TEA
Functions
Office of the Special Assistant for Transportation Engineering
Traffic Engineering Branch
Better Military Traffic Engineering
Roadside Safety Calculators
Roadside Safety Tutorials
Drainage Ditches
Ditch Designs
Tutorials
Calculators
Tutorials
Calculators
Tutorials
Calculators
Tutorials
Calculators
Tutorials
Calculators
Tutorials
Calculators
Ditch Designs
Use of a rounded flat-bottom ditch provides the best combination of safety and drainage.
Table of Contents
Roadside Safety
The Clear Zone
Clear Zones, Curves
Types of Slopes
Measuring Slope
Roadside Slopes
Tree Hazards
Utility Pole Hazards
Other Hazards
Roadside Hazards
NCHRP Report 350
Breakaway Supports
Drainage Ditches
Ditch Designs
Safer Culverts
Relocating Culverts
Drainage Inlets
Edge Drop-Off Hazards
Roadside Barriers
Recommendations
Unacceptable Barriers
Acceptable Barriers
Outdated Guardrail
Barrier Design
Barrier Placement
Roadside Layout
Curb and Guardrail
Barrier Deficiencies
Guardrail Termini
End Treatments
Turned-Down Ends
Positive Guidance
Pavement Markings
RPMs
Delineators
Rumble Strips
Warning Signs
Object Markers
References
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