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Speed reduction impact of dynamic speed feedback signs on high crash curves

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3 Author(s)
Hallmark, S.L. ; Center for Transp. Res. & Educ., Iowa State Univ., Ames, IA, USA ; Hawkins, N. ; Smadi, O.

Lane departure crashes are a significant safety concern. The majority of lane departure crashes occur in rural areas, mostly on 2-lane roadways. A disproportionate number of these crashes occur on horizontal curves. Curve related crashes involve a number of roadway and driver causative factors. A primary driver factor is speeding and a large number of run-off-road fatal crashes on curves are speed related. The amount of speed change needed from the tangent speed to the speed required to traverse a curve has an impact on the frequency and severity of crashes on curves.

Published in:

Intelligent Transportation Systems (ITSC), 2012 15th International IEEE Conference on

Date of Conference:

16-19 Sept. 2012