The combination of heavier traffic volumes occurring on road networks with more work zones increases the impacts of those work zones on both congestion and safety. To address these impacts, the … [Read more...] about Proposed Work Zone Regulations to Improve Safety, Mobility
Traffic Flow
Advance Warning of Stopped Traffic on Freeways: Current Practices and Field Studies of Queue Propagation Speeds
A major safety concern on freeways is traffic flowing at normal speed encountering unexpected slow or stopped traffic. Traffic can be queued due to recurrent congestion, work zones, or collisions … [Read more...] about Advance Warning of Stopped Traffic on Freeways: Current Practices and Field Studies of Queue Propagation Speeds
Improving Efficiency of INDOT Traffic Data Collection Using GPS Devices
INDOT has utilized many new technologies to reduce travel delay, mitigate traffic congestion, and enhance public and employees' safety. Many projects are underway, including re-timing of most existing … [Read more...] about Improving Efficiency of INDOT Traffic Data Collection Using GPS Devices
1991 Transportation Engineering Research Reports
The engineering research reports in this document resulted from the second year of the Undergraduate Transportation Engineering Fellows Program during the summer of 1991. The ten-week program, … [Read more...] about 1991 Transportation Engineering Research Reports
Selection Criteria for Using Nighttime Construction and Maintenance Operations: Final Report
Like other state departments of transportation, the Oregon Department of Transportation (ODOT) has emphasized preservation of existing highways and bridges. Thus, ODOT has done construction and … [Read more...] about Selection Criteria for Using Nighttime Construction and Maintenance Operations: Final Report
Mesoscopic-Wavelet Freeway Work Zone Flow and Congestion Feature Extraction Model
A new mesoscopic-wavelet model is presented for simulating freeway traffic flow patterns and extracting congestion characteristics. A traffic speed-density relationship is introduced with a lane drop … [Read more...] about Mesoscopic-Wavelet Freeway Work Zone Flow and Congestion Feature Extraction Model