Adjustment of driver behavior to an urban multi-lane roundabout.

Details

• Creators:
  Joerger, Mark
• Corporate Creators:
  Oregon. Dept. of Transportation. Research Unit
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Traffic circles
  • Roundabouts
  • Multilane highways
  • Traffic circles--Oregon--Springfield--Evaluation
  • Traffic flow--Oregon--Springfield--Evaluation
  • Automobile drivers--Oregon
• Publication/ Report Number:
  FHWA-OR-RD-07-09
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Edition:
  Final report.
• Corporate Publisher:
  Oregon. Dept. of Transportation. Research Unit
• Abstract:
  In the summer of 2006, the city of Springfield, Oregon installed the first urban multi-lane roundabout in the state. It was hypothesized that after installation, speed variability on approaches to the intersection would decrease from the values with the previous signalized intersection. It was also hypothesized that the initially observed high incidence of driving errors associated with specific areas of the roundabout would decrease over time. Before and after speed recordings of approach roads to the intersection revealed a significant increase in mean speed, but no consistent change in speed variability. Some design features caused initial confusion amongst drivers negotiating the roundabout, but the number of observed incidences of confused behavior declined over the first six months of operation at a rate that fit a classic logarithmic learning curve.
• Format:
  PDF
• Funding:
  SPR 041
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/21847/dot_21847_DS1.pdf
• File Type:
  [PDF - 735.45 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:cd9e796316ca410650eb3671045c55ba5c1fb9210b6c289f2486a2c233d768eb7dd72cb2d085431a913e66d89e65033e955a59d3694a15325987d5a69f6a8078