CTRE

Center for Transportation Research and Education

CTRE|Resources to Address Speed Management in Rural Communities|Vertical Displacement

Vertical Displacement

Vertical treatments are aimed at drivers slowing down to avoid the discomfort created from the treatment.

Treatment Options

Raised intersection
Raised intersection (Hughes et al. 2006).

Vertical physical displacement is different from horizontal displacement due to the uncomfortable feeling that drivers get when traversing these treatments. While horizontal treatments are aimed at requiring drivers to lower their speeds to feel safe, vertical treatments are aimed at drivers slowing down to avoid the discomfort created from the treatment. This section discusses these vertical physical displacement treatments:

Raised Intersections

Speed Humps and Tables

References

Speed table
Speed table (Shauna Hallmark/Institute for Transportation).

Hughes Warren, Debra Chappell, and Shyuan-Ren (Clayton) Chen. Chapter 6. Geometric Design Treatments. Innovative Intersection Safety Improvement Strategies and Management Practices: A Domestic Scan. Federal Highway Administration, 2006.

SCDOT. SCDOT Traffic Calming Guidelines. South Carolina Department of Transportation, Traffic Engineering, Columbia, SC, Revised 2006.

 

 

Construction detail for a typical raised intersection
Construction detail for a typical raised intersection (SCDOT 2006).
Construction detail for a flat-topped speed hump
Construction detail for a flat-topped speed hump (SCDOT 2006).
Synthesis of Safety-Related Research

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Roadway Departures

Rural Intersections

Rural Speed Management

Rural Speed Management

Topic Summary

Horizontal Displacement

Vertical Displacement

Narrowing

Surroundings

Pavement Markings

Traffic Control Signage

General Iowa Resources  for Rural Speed Management

References

Vertical Displacement

Vertical Displacement

Raised Intersections

Speed Humps and Tables

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