Waldman, Ben; Jason Freitas; Alvin Stamp; Negar Karimi
Hyperlink Exit Door
Lesson Background HTML

This study evaluated a queue warning system (QWS) installed throughout the construction work zone (between mile markers 161 and 181) on U.S. Highway I-25. The QWS was evaluated during September and December 2019 for how well it mitigated sudden vehicle or traffic stops. The average vehicle speed and the average speed reduction during the system activation period were used as measures of effectiveness (MOEs).

Other Reference Number
Report No. CDOT-2020-17
Priority Research Area
Publication Sort Date
Prepared by Apex Design for Colorado Department of Transportation
Result Type
I-25 South Gap Queue Warning System Evaluation
Project Category
External URL Disclaimer

(Our website has many links to other organizations. While we offer these electronic linkages for your convenience in accessing transportation-related information, please be aware that when you exit our website, the privacy and accessibility policies stated on our website may not be the same as that on other websites.)