Road safety

Cover of Traffic Management and Infrastructure - Lessons from In-depth Crash Investigations
Traffic Management and Infrastructure - Lessons from In-depth Crash Investigations
  • Publication no: AP-R418-12
  • ISBN: 978-1-921991-49-3
  • Published: 10 October 2012

This report discusses infrastructure and traffic management issues identified in an examination of approximately 700 crash investigations conducted in metropolitan and rural areas of South Australia. Current traffic management and engineering practices are doing much to reduce the frequency and severity of road crashes, but most judgments on effectiveness are based on traffic crash data routinely collected by the police. While this data may be adequate for aggregate analyses of crashes occurring on the road network in general, they tend to lack detail about factors that contribute to the causation and consequences of crashes. This is especially the case for factors that relate to road infrastructure and traffic management or system failures. The Centre for Automotive Safety Research (and the Road Accident Research Unit before it) has a long history of conducting in-depth crash investigation dating back to the 1970s.

  • 1. INTRODUCTION
  • 2. IN DEPTH CRASH INVESTIGATION AT CASR
  • 2.2.1. Sampling Criteria
  • 2.3.1. Sampling Criteria
  • 2.4.1. Sampling Criteria
  • 2.5.1. Metropolitan in-depth study database profile
  • 2.5.2. Rural in-depth study database profile
  • 3. DISCUSSION METROPOLITAN CRASHES
  • 3.1.1. Signalised Intersections
  • 3.1.2. Unsignalised Intersections
  • 3.1.3. Access to adjacent land use
  • 3.1.4. Rear End Collisions
  • 3.1.5. U-turns
  • 3.2.1. Pedestrians
  • 3.2.2. Cyclists
  • 3.3.1. Motorcycles
  • 3.3.2. Heavy Vehicles
  • 3.3.3. Buses
  • 3.4.1. Safety Infrastructure
  • 3.4.2. Kerbside lane conflicts
  • 3.4.3. Environmental Conditions
  • 3.4.4. Effects of Water and Rain
  • 3.4.5. Median Crossovers
  • 3.4.6. Pavement Marking
  • 3.4.7. High Speed Environments
  • 3.5.1. Obstructed views
  • 3.5.2. Speed
  • 4. DISCUSSION RURAL AREAS
  • 4.1.1. Intersections
  • 4.1.2. Head on Collisions and Overtaking Collisions
  • 4.1.3. Access to Private property
  • 4.1.4. Rear end collisions
  • 4.1.5. U-turns
  • 4.2.1. Motorcycles
  • 4.2.2. Heavy vehicles
  • 4.3.1. Protective Features
  • 4.3.2. Bridge Structures
  • 4.3.3. Roadside Hazards
  • 4.3.4. Road Design Elements
  • 4.3.5. Effects of Water and Rain
  • 4.3.6. Linemarking
  • 5. CONCLUSIONS AND RECOMMENDATIONS
  • 5.2.1. Metropolitan Areas
  • 5.2.2. Rural Areas
  • ACKNOWLEDGEMENTS
  • REFERENCES