Accident Analysis of the Conversion from Two-Way to One-Way Frontage Road Operation

Woods, Donald L.; Chang, Myung-Soon

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Accident Analysis of the Conversion from Two-Way to One-Way Frontage Road Operation

1983-11-01
By Woods, Donald L. ; Chang, Myung-Soon

File Language:

English

Details

Creators:

Woods, Donald L. ; Chang, Myung-Soon
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Before And After Studies Crash Analysis Crashes Crash Severity Data Collection Freeways Frontage Roads Service Roads Transportation Operations Two Lane Highways
Publication/ Report Number:

FHWA/TX-84/42+288-3
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Interim: September 1979 - November 1983
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

The reduction in accidents through conversion from two-way to one-way operation on freeway frontage roads, excluding a three-month acclimation period, were examined at nine sites. Both accident frequency and accident severity were examined. Study site criteria were: I) before and after accident data be available; and 2) both of the frontage roads were converted to one-way operation at one point in time. The findings of this research suggest that an average 20 percent reduction in accident frequency, can be expected by conversion of two-way frontage roads to one-way operation. No significant difference in accident severity was indicated from the data available. Conversion to one-way operation is cost/beneficial for one year frontage road accident frequencies of 35 or more accidents per mile (both frontage roads) with major re-channelization of the ramps or 10 or more accidents per mile where no re-channelization is required, delay is not considered. Report 288-4F discusses the issue in detail. These accident frequencies suggest moderate to high traffic volumes are required to make conversion attractive.
Format:

PDF
Funding:

2-8-80-288
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:88802984bcae5f30c6d56bee310071dc0e3cf1f5796739a03a2f81472ec7706e6e743eb3ac90450a06361e8e453a0002bcd532e0267a110e6d49c542161309b7
Download URL:

https://rosap.ntl.bts.gov/view/dot/85805/dot_85805_DS1.pdf
File Type:

[PDF - 624.66 KB ]

File Language:

English

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