Safety and Design Improvements at Rural Expressway Median Crossovers Phase 2

Spring, G S; Virkler, Mark R; Jitta, S; Akula, M

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Safety and Design Improvements at Rural Expressway Median Crossovers Phase 2

2004-09-01
By Spring, G S ; Virkler, Mark R ; Jitta, S

File Language:

English

Details

Creators:

Spring, G S ; Virkler, Mark R ; Jitta, S ; Akula, M
Corporate Creators:

Missouri. Department of Transportation ; United States. Federal Highway Administration ; University of Missouri--Columbia ; University of Missouri--Rolla
Corporate Contributors:

Missouri. Dept. of Transportation. Research, Development and Technology Division
Subject/TRT Terms:
Publication/ Report Number:

RDT 04-013 ; RI 98-009
Resource Type:

Tech Report
Geographical Coverage:

Missouri ; United States
TRIS Online Accession Number:

00983445
Edition:

Final Report January 1 – December 31, 2003
Corporate Publisher:

Missouri. Department of Transportation
Abstract:

Expressway medians separate opposing lanes of traffic. Crossovers in medians provide protection and control for cross and turning traffic. This study provides a means for the Missouri Department of Transportation to determine whether particular high-speed rural expressway crossovers are performing satisfactorily and, if not, to assess alternatives for crossover design. Design practices of other states were examined and alternative design options were identified. The "Highway Capacity Manual" (HCM) approach and the CORSIM simulation technique were compared to determine how best to identify appropriate alternatives. A procedure was then developed to assist district traffic and design engineers in selecting improvements for existing crossovers as they become congested. The procedure includes a diagram showing the combinations of highway volumes compatible with specific design alternatives.
Format:

PDF
Funding:

RI98-009
Download URL:

https://rosap.ntl.bts.gov/view/dot/39116/dot_39116_DS1.pdf
File Type:

[PDF - 1.24 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:43cb2941ebdf2abcc41cce6f8ba27cda190cf4b8b30d40712bf754462045afc6

File Language:

English

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