Safety performance functions for freeway merge zones.

Lyon, Craig; Persaud, Bhagwant; Hattan, David E.; Renner, Gabrielle; Persaud Lyon, Inc.; Felsburg, Holt & Ullevig

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Safety performance functions for freeway merge zones.

2013-12-01
By Lyon, Craig ; Persaud, Bhagwant ; Hattan, David E. ; ...

[PDF-338.40 KB]

English

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Details:

Creators:

Lyon, Craig ; Persaud, Bhagwant ; Hattan, David E. ; Renner, Gabrielle

Lyon, Craig ; Persaud, Bhagwant ; Hattan, David E. ; Renner, Gabrielle Less -
Corporate Creators:

Persaud Lyon, Inc. ; Felsburg, Holt & Ullevig

Persaud Lyon, Inc. ; Felsburg, Holt & Ullevig Less -
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Accident Rates Annual Average Daily Traffic Data Collection Freeways Merging Area Ramps (Interchanges)
Publication/ Report Number:

CDOT-2013-12
Resource Type:

Tech Report
Geographical Coverage:

Colorado
Corporate Publisher:

Colorado. Dept. of Transportation. Research Branch
Abstract:

This report documents the results of a research project to support CDOT in the area of Safety

Performance Function (SPF) development. The project involved collecting data and developing SPFs for

ramp-freeway merge zones categorized as isolated, non-isolated and weave. For each of these three

categories, data for the period 2007 to 2011 were collected at sites selected to ensure statewide

geographical representation and coverage of the range of traffic volume and other variables in each

category. The development of SPFs for the three categories of ramp-freeway merge zones was

successful. Separate SPFs were developed for Total, fatal+injury (FI) and Property Damage Only (PDO)

crashes.

Implementation

CDOT can use the developed SPFs immediately to apply state-of-the-art methodologies for road safety

management activities.
Format:

PDF
Funding:

90.75
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:06d700880e5eae7cd6dc011b3ac31d517fd9e432203a5115d36e302ab1dc2088
Download URL:

https://rosap.ntl.bts.gov/view/dot/26884/dot_26884_DS1.pdf
File Type:

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Safety performance functions for freeway merge zones.

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