Using Imaging Technology to Evaluate Highway Safety [Technical Summary]

Tarko, Andrew

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Using Imaging Technology to Evaluate Highway Safety [Technical Summary]

2004-07-01
By Tarko, Andrew

File Language:

English

Details

Creators:

Tarko, Andrew
Corporate Creators:

Purdue University. Joint Transportation Research Program
Corporate Contributors:

Indiana Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Data Collection Decision Theory Estimation Theory Evaluation Extreme Value Theory Post-encroachment Time Right Angle Crashes Risk Assessment Risk Estimation Safety Surrogate Safety Measure Surrogate Safety Measures Technology Video Imaging Detectors
Publication/ Report Number:

FHWA/IN/JTRP-2004/27
Resource Type:

Brief
Geographical Coverage:

United States ; Indiana
Edition:

Technical Summary
Corporate Publisher:

Indiana Department of Transportation
Abstract:

Crash-based safety analysis is set back by several shortcomings such as randomness and rarity of crash occurrences, lack of timeliness, and inconsistency in crash reporting. Safety analysis based on observable traffic characteristics more frequent than crashes is one promising alternative. Traditional approach to alternative safety analysis relies on the assumption of constant risk across locations. In addition, the current practice of collecting surrogate data often suffers from inherent subjectivity of humans involved in the task. In this research, we proposed a novel statistical approach to safety estimation based on observable traffic characteristics. We evaluated the proposed method by applying to right-angle collisions at signalized intersections. 8-hour traffic movements at selected intersections were recorded using a Purdue University mobile traffic lab. A traffic characteristic so-called post-encroachment time (PET) was observed as a surrogate safety measure to evaluate the risk of collisions.
Format:

PDF
Funding:

SPR-2663
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:46ce886af7339f94c3e4c91eb1ec3f03ce87fd361a0c697d8c667db2bf4b811d9db5b1949d023fca84be2687096e2b9de30c6a8dea7abfee7fd40587e2c48985
Download URL:

https://rosap.ntl.bts.gov/view/dot/90719/dot_90719_DS1.pdf
File Type:

[PDF - 28.69 KB ]

File Language:

English

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