A Novel Approach of Safety Evaluation for Red Light Violation Related Crashes at Signalized Intersections

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.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 580-589
  • Monograph Title: Urbanization Challenges in Emerging Economies: Energy and Water Infrastructure; Transportation Infrastructure; and Planning and Financing

Subject/Index Terms

Filing Info

  • Accession Number: 01700656
  • Record Type: Publication
  • ISBN: 9780784482025
  • Files: TRIS, ASCE
  • Created Date: Feb 23 2019 3:03PM