NDOT Testing Variable Advisory Speed Signs on I-80

Dec. 3, 2024 (Lincoln, Neb.) — The Nebraska Department of Transportation (NDOT) will begin testing Variable Advisory Speed (VAS) signs along Interstate 80 (I-80) from the Wyoming State line east to the Oshkosh Interstate Exit 95 on Tuesday, Dec. 3.

VAS signs are new safety devices implemented by NDOT to help drivers adjust their behavior for rapidly changing roadway conditions, such as adverse weather, reduced visibility or traffic congestion.

By implementing VAS signs, NDOT aims to inform drivers to adapt their speeds proactively, reducing the likelihood of high-speed crashes and their associated risks, such as fatalities, serious injuries and traffic congestion. According to the U.S. Department of Transportation Federal Highway Administration (FHWA), VAS signs can reduce fatal and injury crashes by up to 51%. VAS signs also help lessen the chances of secondary crashes by preparing drivers for slower traffic ahead. NDOT will continuously monitor conditions and determine when reduced speeds should be displayed.

During testing, the VAS signs will display the current enforceable speed limit. Once testing is complete signs will be turned off until reduced speeds are advised. Speeds displayed by VAS signs are advisory, and drivers are encouraged to adhere to the reduced speed to improve safety on the Interstate. VAS signs are expected to be implemented along I-80 from the Wyoming border to the Overton Interstate Exit 248 by December 31.