In Oregon and Colorado, downhill speed warning systems decreased truck crashes up to 13 percent at problem sites.

31 October 2006
Clear Creek County,Colorado,United States; Emigrant Hill,Pendleton,Oregon,United States

Summary Information

This conference presentation provided an overview of several ITS technologies that improve safety for commercial vehicles operating in rural areas.

Downhill Speed Warning Systems
Several years of safety data collected at multiple sites show that road geometry warning systems can eliminate rollover crashes and the impacts are sustainable. Downhill speed warning systems have proven effective at mitigating risk to large trucks in areas with steep terrain. At problem sites in Oregon and Colorado these systems have decreased truck crashes by up to 13 percent.

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CVO/Freight and ITS Session (Presentation)

Author: Drakopoulos, Alex (Marquette University)

Design Guidelines for Including ITS in Projects, "Colorado DOT CoTrip, Web site URL Guidelines Web New Format 02-05/Web Solutions Packages/Truck Overturn Speed Advisory System.xls. Last Accessed 2 February 2008

Published By: Presentation at the 12th annual ITS Forum, Wisconsin Chapter of ITS America - Smartways. Milwaukee, Wisconsin.

Source Date: 31 October 2006



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Goal Areas


Typical Deployment Locations

Rural Areas


None defined

Benefit ID: 2008-00513