Roadway median treatments : phase 1 and phase 2.

Gattis, J. L.; Duncan, L. K.; Tooley, M. S.; Brewer, A. S.; Le, M.Q.; Muthu, P.

i

Roadway median treatments : phase 1 and phase 2.

2010-02-01
By Gattis, J. L. ; Duncan, L. K. ; Tooley, M. S.

File Language:

English

Details

Alternative Title:

Roadway median treatments : phase one and phase two
Creators:

Gattis, J. L. ; Duncan, L. K. ; Tooley, M. S. ; Brewer, A. S. ; Le, M.Q. ; Muthu, P.
Corporate Creators:

Mack-Blackwell National Rural Transportation Study Center (U.S.)
Corporate Contributors:

United States. Department of Transportation. Research and Special Programs Administration
Subject/TRT Terms:
Publication/ Report Number:

MBTC DOT 2055/2067
Resource Type:

Tech Report
Geographical Coverage:

Arkansas
Edition:

Final report.
Corporate Publisher:

Mack-Blackwell National Rural Transportation Study Center (U.S.)
Abstract:

This research project examined relationships among crash rates, cross section design elements, and other operational attributes of multilane urban and suburban roadways in Arkansas. Crash rates for four cross section categories (roadways with no median, roadways with occasional left-turn lanes, roadways with continuous two-way left turn-lanes, and roadways with raised or depressed medians) were compared. Freeways were not considered. Crash histories were examined for cross section types, speed limits, volumes, widths of through lanes, presence of curb or shoulder, outer shoulder widths, median widths, and the densities of various types of access. Some variables were correlated, and it was suspected that such correlations can skew crash prediction models. Generally, the raised or depressed median group had slightly lower crash rates. The findings can help planners and designers when selecting the median type and cross section design for multilane roadways in rural areas that face future urban development, and in urban areas.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/17601/dot_17601_DS1.pdf
File Type:

[PDF - 1.66 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha256:e3b079c191d0a72b82f0ce205ee327c8cd41500d335c8f0cc05710c9dea5ebb6

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

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.