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Road User Safety
- 1. Road User Safety at RoadworksBrendon Wiseman ROAD SAFETY POLICY MANAGER 17 September 2015 Gareth Peers A/ROAD SAFETY POLICY COORDINATOR
- 2. Keeping WA Moving Keeping WA moving is our strategic direction for Main Roads. Our aspiration is to provide world class outcomes for the customer through a safe, reliable and sustainable road based transport system. Area of focus: Safety Provide improved safety outcomes for all users of the transport network.
- 3. MRWA Road Safety Strategy – The Road Towards Zero • We believe that no one should die or be seriously injured on the State’s road network, and will manage the network to minimise road trauma. • Our Vision: To eliminate death and serious injury crashes on the Western Australian road network.
- 4. Issues & Concerns • Road user perspective • Congestion • Communication • Non-compliance with standards • Accountability & responsibility 9%
- 5. Incorrect / Inconsistent Traffic Management • Unsafe worksites: - Non compliance by drivers - Speed differentials - Insufficient warning signage - Inadequate levels of protection • Inefficient worksites: - Increase in project construction time / cost - Increased congestion - Increased whole of Government costs.
- 7. Understanding Human Behaviour on the Road There are two types of driver expectancy relevant to traffic management at roadworks (Naatanen and Summala 1976): – Continuation expectancy • Events of the past will continue – Event expectancy • Events which have not happened will not happen When the Information does not match the driver’s expectations, system failures in the form of crashes and incidents are much more likely to occur.
- 8. No speed zone credibility = no compliance
- 9. Risks to Road Users • Planning: consider workers and road users • Road users are not limited to car drivers • Pedestrians, such as school children and people with disabilities, cyclists, emergency vehicles, heavy vehicles and motor cycles all need to be catered for when planning roadworks.
- 10. Hazards after works complete
- 11. Traffic Control Hazards DRIVER EXPECTATION
- 15. Vulnerable Road Users Not trafficable to cyclists or wheel chairs.
- 16. Worksite Hazards
- 17. Rail Crossings
- 19. Detour Hazards
- 20. Catering for all vehicles
- 21. Innovations
- 22. Truck / Trailer Mounted Attenuators
- 24. Electronic Variable Speed Signs • Makes the speed limit more obvious • Motorists found to be more compliant and slowed down when this type of sign in use • Can be changed remotely
- 25. Mobile Speed Advisory Signs • Will assist compliance to the speed limits at worksites • Can be activated immediately on arrival on-site • Collects data on individual vehicles by date, time and speed • Can be set at a specified speed and if vehicles enter the site above that speed wrist bands worn by traffic controllers will vibrate.
- 28. The Future
- 29. The Future
- 30. The Future
- 31. The Future
- 32. Code of Practice – Recent updates • New national unit of competency for TMA operators • TM Registration Scheme • State Road TM Policy
- 33. Moving Forward • Harmonisation of learning and assessment • Austroads: Safety at Road works Research Project (International best practice) • Australian Standard 1742.3 Review • TMA guideline (WA) and national unit • TM Industry training package (national)
Hinweis der Redaktion
- AS1742.3 To fulfil the above; we need clear, consistent traffic management through worksites with realistic speed limits. AS1742.3 and Main Roads Code of Practice have been designed to maximise safety at worksites / events while minimising impacts on road efficiency. Knowledge and application of the Standards is critical for Traffic Management success.
- This includes road workers. We acknowledge that people make mistakes and these mistakes can lead to death and serious injury on our roads.
- Congestion Inappropriate signs Inappropriate worksite speed limits Non permitted works Non-compliance with standards Communication: Between plant and machinery operators and traffic management personnel. Communication Inconsistency of schemes Accountability / responsibility of traffic management and safety at worksites
- Examples: incorrect speed limit (to high or to low), signs or barriers being erected or left up when no works are taking place, length of worksite to long, decreased number of lanes exceeding lane capacity, barriers to close to road, etc…….. During rush hour Perth drivers average 38 km per hour while in Sydney that’s 26 km per hour. Traffic jams cost 13 billion dollars a year in lost productivity in Australia
- This video highlights how easily congestion can be caused.
- The prior experiences of drivers develop, over time, into a set of workable expectancies which allow for anticipation and forward planning. There are types of driver expectancy (Naatanen and Summala 1976): Continuation expectancy – the events of the immediate past will continue, e.g. the last few roadwork's site had a speed reduction for no reason so the next site may not have a justified reduction; the car in front will continue at its past speed. Event expectancy – events which have not happened will not happen, e.g. a worker will not be at this worksite because the driver has not seen one here yet.
- There are likely to be compliance issues with this worksite. The roadwork's ahead signs were not in advance of the 60’s, there was no intermediate (buffer speed limit). To top it all off there is no worksite visible! This worksite fails to meet the traffic management objectives particularly safety, efficiency and customer satisfaction. It also affects main road credibility as a whole. Remember the road user sees traffic management as a core part of Main Roads business (which it is).
- Crashes more likely to occur at roadworks sites than non- works > due to changes geometry, sight distance as well as risks from the worksite..
- Please note a crash occurred here when there were no works taking place and reportably no aftercare signage. Consideration should have been given to having the symbolic “Slippery Sign” and “Loose Surface” sign to warn of the loose material at the exit of a curve.
- Driver expectation when using traffic controllers. Important to ensure queues are monitored and drivers are adequately warned of the queue
- Delineation after hours when signs are removed.
- For example if the manager of this project had been appropriately trained they would know that all road users need to be provided for at road work sites (including path users who need the same provisions as prior to the works). Therefore the Project Manager would have recognised this path issue and fixed it prior to receiving complaints from the public. The issue could have been identified / rectified in the TMP scoping stage OR TMP design review process OR through the onsite compliance inspections. Depending on the duration of works it may have been as simple as some water and a roller to achieve a smooth trafficable surface. The path may have been ok to begin with but deteriorated over time (due to a lack of compliance inspections).
- Just putting a 40 sign up will not compensate for the poor barrier choice. Be aware that worksites constantly change and that truck drivers dropping off matrerial etc may create hazards.
- Railway crossing – 80 km/h zone with a temporary 100 km/ sign?
- Workers setting up May continue on the same alignment as the lateral shift into apposing direction. Offset of opposing directions of travel. Removal of median barriers on dual carriageways. Significantly reduces capacity / increases congestion. This leads to night works which makes the works longer and increases the costs. Also set up and take down of traffic management and the associated risks are multiplied. Confusing road layout with conflicting visual cues meaning that if devices get knocked over crashes occur.
- Where will the traffic go. Can the intersections cope with the traffic volumes and vehicle types. Can the road pavement cope? Will road users take increased risks particularly at un controlled intersections.
- RTA in NSW use the variable speed limit signs. The graph is showing speeds from an RTA trial with normal signs (blue) and with electronic speed limit signs (red)
- Good example of a barrier and end treatment on GEH City East Alliance.