A Michigan DOT research study confirmed that adding green strobe lights to existing amber warning lights on winter maintenance vehicles increases the trucks’ visibility to other motorists.
Researchers evaluated dozens of lighting configurations to identify the best options for increasing the plows’ visibility while minimizing glare. MDOT began using green warning lights on winter maintenance vehicles in 2016.
- Research report: Effectiveness of Green Strobes on Winter Maintenance Vehicles and Equipment, August 2020.
- Two-page Research Spotlight
- Video news release
Image source: Michigan DOT