Red Light Running Cameras
•Download as PPT, PDF•
0 likes•208 views
Red Light Running Cameras
Recommended
Recommended
More Related Content
More from Fatemeh Baratian
More from Fatemeh Baratian (11)
Recently uploaded
Recently uploaded (20)
Red Light Running Cameras
- 1. Red Light Running Cameras (ongoing Safety study) Fatemeh Baratian Ghorghi PhD Student at: Auburn University, Department of Civil Engineering
- 2. INTRODUCTION Evaluate the effectiveness of RLC systems in Opelika 1.Operational Impact 2.Safety Impact
- 4. RLC in Opelika, AL • April 1, 2013 • The overall safety effect is not clear.
- 7. SAFETY
- 8. Past findings of safety effects • Reduced violation rate by about 40% during the first year • Reduced right-angle crashes (injury and fatal) 19% - 32% • Increased rear-end crashes (PDO) up to 40% • The costs were offset by benefits
- 9. DATA COLLECTION • CARE 1.Crashes due to RLR violation 2.Rear-end crashes (not every RE crash!!!! Just related to the RLC) • Not clearly defined in crash reports : 2 filters
- 10. DATA COLLECTION Before: April 2010 –April 2013 After: April 2013 –April 2014 (Only April 2013- July 2014 is available now)
- 11. DATA COLLECTION • RLR Crashes • RE Crashes
- 12. DATA COLLECTION 237- 59- 1505 -948
- 13. Reviewing hardcopies (152) • RLR Crashes- all true crash • RE crashes- 8% true crash
- 14. DATA ANALYSIS • RLR Crashes • Before: April 2010 –April2013 Intersection (BEFORE) April 2010 –April2013 Severity Number Injured Number Killed Number crash PDO Possible Injury Non- Incapacitatin g Injury Incapacitatin g Injury Fatal Monitored approaches Pepperell Parkway& Gateway Drive 5.0 1.0 1.0 1.0 0.0 8.0 0.0 8.0 Interstate Dr & Gateway Drive 4.0 0.0 0.0 1.0 0.0 1.0 0.0 5.0 Fredrick Rd & Gateway Drive 2.0 1.0 1.0 0.0 0.0 4.0 0.0 4.0 Fox Run Pkwy&W Point Ave 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total 11.0 2.0 2.0 2.0 0.0 13.0 0.0 17.0
- 15. DATA ANALYSIS • RLR Crashes • After: April 2013- April 2014 Intersection (BEFORE) April 2010 –April2013 Severity Number Injured Number Killed Number crash PDO Possible Injury Non- Incapacitatin g Injury Incapacitatin g Injury Fatal Monitored approaches Pepperell Parkway& Gateway Drive 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Interstate Dr & Gateway Drive 1.0 2.0 1.0 0.0 0.0 5.0 0.0 4.0 Fredrick Rd & Gateway Drive 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fox Run Pkwy&W Point Ave 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total 2.0 2.0 1.0 0.0 0.0 5.0 0.0 5.0
- 16. DATA ANALYSIS
- 17. DATA ANALYSIS
- 18. DATA ANALYSIS • RE Crashes • Before: April 2010 –April2013 Intersection Severity Number Injured Number Killed Number crash PDO Possible Injury Non- Incapacitati ng Injury Incapacitati ng Injury Fatal Monitored approaches Pepperell Parkway& Gateway Drive 1.0 0.0 1.0 0.0 0.0 1.0 0.0 2.0 Interstate Dr & Gateway Drive 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Fredrick Rd & Gateway Drive 2.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 Fox Run Pkwy&W Point Ave 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Total 5.0 0.0 1.0 0.0 0.0 1.0 0.0 6.0
- 19. DATA ANALYSIS • RE Crashes • After: April 2013- April 2014 Intersection Severity Number Injured Number Killed Number crash PDO Possible Injury Non- Incapacitatin g Injury Incapacitatin g Injury Fatal Monitored approaches Pepperell Parkway& Gateway Drive 0.0 0.0 1.0 0.0 0.0 1.0 0.0 1.0 Interstate Dr & Gateway Drive 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Fredrick Rd & Gateway Drive 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fox Run Pkwy&W Point Ave 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total 1.0 0.0 1.0 0.0 0.0 1.0 0.0 2.0
- 20. DATA ANALYSIS
- 21. DATA ANALYSIS
- 22. DATA ANALYSIS 1. Colleting larger number of crashes 2. Using ADT 3. EB method
- 23. DATA COLLECTION Using ADT: http://algis.dot.state.al.us/atd/default.aspx 2014
- 24. Timeline • Starting from January1st , 2014 • Literature Review (April 1st , 2014) • Identify Required Information (May 1st , 2014) • Field Observation (June 15th , 2014) • Data Collection (August 15th , 2015) • Data Analysis (Oct 15th , 2015) • Interpretation of Results & Recommendation (December 1st , 2015) • Final Report (December 31st , 2015)
- 25. ALDOT Proposal • Widespread use of cameras necessitates further study. • Safety Evaluation of about 40 intersections in Alabama 1. Change in number of crashes? 2. Change in number of violations? Access to the number of citations
- 26. Thank You!
Editor's Notes
- Beginning April 1, 2013, RLCs were turned on at four different intersections in Opelika, AL. The overall safety effect of the installed RLCs at those intersections is not clear.
- crashes in the intersection physical area where violator is running the light plus rear-end crashes that are the consequence of camera installation occurring in the approach queue. Since these types of crashes are not clearly defined in crash reports, a combination of related variables was used to make an estimate
- crashes in the intersection physical area where violator is running the light plus rear-end crashes that are the consequence of camera installation occurring in the approach queue. Since these types of crashes are not clearly defined in crash reports, a combination of related variables was used to make an estimate
- The costs from the increase in REs were offset by benefits from decrease in RAs
- crashes in the intersection physical area where violator is running the light plus rear-end crashes that are the consequence of camera installation occurring in the approach queue. Since these types of crashes are not clearly defined in crash reports, a combination of related variables was used to make an estimate
- These three are not always recorded Combined Found where crash occured
- These three are not always recorded Combined Found where crash occured