ASCE India Conference 2017
A Novel Approach of Safety Evaluation for Red Light Violation Related Crashes at Signalized Intersections
Publication: Urbanization Challenges in Emerging Economies: Energy and Water Infrastructure; Transportation Infrastructure; and Planning and Financing
ABSTRACT
Red light violations (RLVs) pose a huge risk resulting into severe crashes at signalized intersections. The present study proposes a novel approach of proactive safety evaluation using post encroachment time (PET) and investigates the effectiveness of signal countdown timer (SCT) in reducing RLVs. For this purpose, a 4-legged signalized intersection located in Delhi is selected. A “before-after” safety analysis is conducted both in the presence and absence of SCT at the onset of red. Study results show that the occurrence of RLVs during initial red is more at timer off condition. Furthermore, low average PET value is observed at “no-SCT” condition, indicating a risky crossing attempted by violators. The probability of RLV crashes is reduced by 37.2% at the same intersection when timer is on. Hence, SCT is found to be an effective countermeasure to reduce RLVs at the initial red as well as severe crash types at signalized intersection.
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Published In
Urbanization Challenges in Emerging Economies: Energy and Water Infrastructure; Transportation Infrastructure; and Planning and Financing
Pages: 580 - 589
Editors: Udai P. Singh, B. R. Chahar, Indian Institute of Technology, H. R. P. Yadav, Institution of Engineers (India), and Satish K. Vij
ISBN (Online): 978-0-7844-8202-5
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© 2018 American Society of Civil Engineers.
History
Published online: Dec 13, 2018
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