In coordination with FHWA and CALTRANS, an engineer involved in the US - Mexico Border Technology Exchange Program has developed portable speed bumps that function much like rumble strips. It is … [Read more...] about Portable Speed Bumps in Work Zones
Traffic Control Devices
Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight
Yellow warning signs are an important and abundant type of traffic control device. Improving warning signs could be a cost-effective countermeasure at hazardous locations. The use of fluorescent … [Read more...] about Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight