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

Joerger, Mark; Oregon. Dept. of Transportation. Research Unit

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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

2007-05-01
By Joerger, Mark

English

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Details:

Creators:

Joerger, Mark
Corporate Creators:

Oregon. Dept. of Transportation. Research Unit
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Automobile Drivers--Oregon Multilane Highways Roundabouts Traffic Circles Traffic Circles--Oregon--Springfield--Evaluation Traffic Flow--Oregon--Springfield--Evaluation
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
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:579f79b0be368fe6f96df8035dd0172681b8a7903c354b39229a32d78e2c9d9d
Download URL:

https://rosap.ntl.bts.gov/view/dot/21847/dot_21847_DS1.pdf
File Type:

[PDF-735.45 KB]