Relationship between Speed and Lateral Position on Curves, September 2012

(2012) Relationship between Speed and Lateral Position on Curves, September 2012. Transportation, Department of

pdf
Preview
PDF
speed_lateral_position_w_cvr.pdf

File Size:608kB

Abstract

Excessive speed is often cited as a primary driver factor in crashes, particularly rural two-lane crashes. It has also been suggested that speed plays a significant role in crashes on curves. However, the relationship between speed and crashes on curves is not well documented because it is difficult to determine driver speed after the fact when investigating a crash. One method to begin documenting this relationship is to explore the relationship between lateral position and speed as a crash surrogate. For this study, the researchers collected speed and lateral position data for three rural two-lane curves. The relationship between lateral position and speed was assessed by comparing the odds of a near-lane crossing for vehicles traveling 5 or more mph over the advisory speed to those for vehicles traveling below that threshold.

Item Type: Newsletter
Keywords: crash mitigation, crash surrogate analysis, curve-related crashes, road departure factors, rural road safety
Subjects: Transportation > Research
Transportation > Roads and highways
Transportation > Design and Construction
Transportation
ID Code: 14767
Deposited By: Margaret Barr
Deposited On: 15 Jul 2013 15:31
Last Modified: 15 Jul 2013 15:38
URI: http://publications.iowa.gov/id/eprint/14767