Camera Enforced Red Lights

1
Camera Enforced Red Lights

• Benefits to Implementation in
• San Antonio, Texas
• Patrizia Longoria
• University of Texas-San Antonio

2
Statistics and Characteristics of the Motoring
Public

• In 2003 there were 204 million cars on US
  roadways1
• There is an average of 1.9 cars per household1
• The ME generation
• Complacency

1. Bureau of Transportation Statistics
3
US DOTAccident Statistics 20001

• 64 million on US roadways
• 92,000 due to red light runners
• 90,000 injuries
• 950 deaths

1. United State Department of Transportation
4
The Problem

• Red Light Runners
• A motorist enters an intersection after the
  traffic light has turned RED

5
Camera Enforced Red Lights

• Types
• Continuous snapshots
• Activated with light change rapid digital
  snapshots
• Activated with breach of the intersection

6
Established Programs

• 99 Cities
• 17 States
• Chicago, IL1
• More than 15 in the first year of the program
• 90 fine
• San Francisco, CA2
• 42 drop in violation after 6 month of use
• 360.90 fine
• Washington, DC3
• 59 drop in violations after 18 months of use
• 75 fine

• 1. Information obtained from Traffic Engineering
• 2. Information obtained on http//sfgov.org/site/
  livablestreets_index.asp?id14440
• Information obtained on http//www.mpdc.org/blue/
  news.asp?sid377

7
San Antonio Accident Statistics 2003

• 78,765 total accidents2
• 2,408 accidents related to Red Light Running1
• 3.1 of total crashes
• 4.1B total damages3
• 127 M related to Red Light Running1
• 3.1 of total damage cost

• TTI data based on 1997-2000 averages
• COSA data for 2003
• Established from U.S Crash Counts, Wang,
  Knipling, and Blincoe, 1999

8
State of Texas Position on the Issue

• Current legislation allows for civil citations
• Current movement is opposed changing to criminal
  offense

9
Selection Criteria

• High accident location
• One location per City Council District
• No state maintained roadways
• Highways
• Interstates
• Farm to Market (FM)

10
Selected Intersections

• McCullough Av Rector Dr
• Commerce St New Braunfel
• Pecan Valle Dr Southcross
• Southcross Zarzamora St
• Guadalupe St Zarzamora St
• Silent Sunrise Tezel Rd
• Callaghan Ingram
• Babcock Rd Wurzbach
• Nakoma Dr West Ave
• Thousand Oaks Wetmore

11
Accident Record Database

• Department of Public Safety coding threshold
• At least one vehicle towed due to damage
• An injury
• A fatality

12
Accident Statistics
13
Breakdown

• Total of 69 accident
• 14 right angle accidents
• 20

14
Questions ??

• Patrizia Longoria
• Plongori_at_lonestar.utsa.edu