Road Design
Guidance on Median and Centreline Treatments to Reduce Head-on Casualties
- Publication no: AP-R519-16
- ISBN: 978-1-925451-13-9
- Published: 7 June 2016
- PDF (free) Download
This report presents a compendium of local and overseas practice and experience in minimising the risk and severity of head-on crashes. It is intended to assist road safety practitioners identify effective actions that can be taken to reduce the incidence and severity of such crashes, with a focus on median and centreline treatments.
In addition to discussing well-proven methods to address head-on crashes, this report also presents some innovative treatments for which there is currently insufficient data to confirm their benefits, but which may be effective in reducing head-on crashes where the crash history does not justify the expense of applying more established treatments.
- Summary
- 1. Introduction
- 1.1. Background
- 1.2. Key Contributing Factors
- 1.3. Intent of the Report
- 1.4. Structure of this Report
- 1.5. Crash Modification and Reduction Factors
- 1.6. Approved Safety Barrier Products
- 2. Centreline Treatments
- 2.1. Standard Dividing Linemarkings
- 2.2. Raised Profile Centrelines
- 2.3. Raised Profile Centrelines and Edgelines
- 2.4. Enhanced Pavement Markings
- 2.5. Raised Reflective Pavement Markers
- 2.6. Internally Illuminated Pavement Markers
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Profiled thermoplastic centreline stripes
- Cold applied plastic materials
- Road marking tape
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- 3. Median Treatments
- 3.1. Painted Median
- 3.2. Pavement Bars
- 3.3. Wide Centreline Treatment
- 3.4. Raised Median
- 3.5. Barrier Kerbing on Median
- 3.6. Median Barriers
- 3.6.1. Rigid Median Barriers
- 3.6.2. Semi-rigid Median Barriers
- 3.6.3. Wire Rope Median Safety Barriers
- 3.6.4. 2+1 Roads
- 3.6.5. Moveable Barriers
- 3.6.6. Motorcyclist Concerns with Median Barriers
- 3.6.7. Median Barrier Terminal Treatments
- 3.7. Flexible Bollards
- 3.8. Median Turning Bays
- 3.9. Median Design
- 3.9.1. Median Width
- 3.9.2. Cross-section
- 3.9.3. Pavement Edge Drop-off
- 3.9.4. Median Shoulder
- 3.10. Median Glare Treatments
- 3.11. Median Plantations
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- 4. Other Road Infrastructure Solutions
- 4.1. Speed Management
- 4.2. Intermittent Overtaking Lanes
- 4.3. Improved Pavement Surface
- 4.4. Shoulder Treatments
- 4.5. Improved Roadside Forgiveness
- 4.6. Curve Delineation and Warning
- 4.7. Addressing Wrong-way Movements
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- Crash modification
- Treatment life
- 5. Conclusion
- References
- Appendix A Summary of Treatments
- Appendix B Other Countermeasures to Address Head-on Crashes
- B.1 Driver Interventions
- B.1.1 Fatigue Management
- B.1.2 Driver Distraction
- B.2 Vehicle-based Treatments
- B.2.1 Front Underrun Protection
- Crash modification
- B.2.2 Anti-lock Braking Systems
- Crash modification
- B.2.3 Electronic Stability Control
- Crash modification
- B.2.4 Lane Departure Warning
- Crash modification
- B.2.5 Collision Warning and Prevention Systems
- Crash modification
- B.2.6 ANCAP
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