Start date: 07/01/14
End date: 12/31/16
- Shauna Hallmark | 515-294-5249 | email@example.com | Iowa State University
- Jing Dong | 515-294-3957 | firstname.lastname@example.org
About the research
Work-zone safety is a persistent problem that requires an effective suite of tools that can be applied to constantly varying conditions. The Federal Highway Administration (FHWA) summarizes the severity of the problem by noting that during the past five years in work-zone crashes more than:
- 4,400 persons died (85 percent of which was the driver or passenger),
- 200,000 persons were injured,
- Drivers are the most frequent fatality in work zone crashes,
- Most work zone fatalities involve working-age adults,
- Rear-end crashes (running into the rear of a slowing or stopping vehicle) are the most common type of work-zone crash occurring within the advanced warning and transition areas of a work zone.
The objective of this research is to quantify the impact of using temporary rumble strips within the advanced warning section of a work zone to evaluate both safety and operational aspects including the following: driver braking, change in speed, change in speed compliance, change in lane crossover or going around the rumbles, physical movement of the rumble strips from their initial placement, and tracking of work-zone crashes.
This research will support state DOTs, local agencies, and contractors in preventing work-zone intrusions and rear-end crashes. In addition, this effort supports the MAP-21 emphasis area on safety within the work zone.
- Iowa Department of Transportation
- Midwest Transportation Center