Road safety design standards and the Asian Highway Network. irap Asia Pacific Workshop Greg Smith 2016/05/26

Transcription

1 Road safety design standards and the Asian Highway Network irap Asia Pacific Workshop Greg Smith 2016/05/26

2

3

4 AH Standard Summary While developing the Asian Highway network, Parties shall give full consideration to issues of safety.

5 Road safety in AH Network countries Serious crashes tend to be concentrated. Eg 33% of deaths in India occur on National Highways, which account for around 3% of roads High death rates on some road sections: 0.42 deaths /km /year in Bangladesh 0.61 deaths /km /year in Indonesia 1.9 deaths /km /year in India By comparison: 0.07 deaths /km /year: highest risk road in the UK

6 Managing risk for pedestrians and bicyclists Pedestrian crossings with refuge islands Sidewalks Pedestrian fences Bicycle lanes Traffic calming Street lighting

7 Managing risk for vehicle occupants and motorcyclists Run-off road crashes: Delineation Audio-tactile lines Forgiving roadsides (including specialist motorcycle barriers where motorcycle volumes are high) Skid resistance

8 Managing risk for vehicle occupants and motorcyclists Head-on crashes: Delineation Audio-tactile lines Skid resistance Median treatments such as safety barriers and wide centrelines Overtaking lanes

9 Managing risk for vehicle occupants and motorcyclists Intersection and rear-end crashes: Delineation Priority control Rectification of skewed intersections Provision of protected turn lanes Intersection channelization Lighting Skid resistance Roundabouts Managing gaps in medians

10 Managing risk for vehicle occupants and motorcyclists Exclusive and non-exclusive motorcycle lanes

11 Class II Rolling terrain, design speed 60km/h (Typical curve and intersection frequency) Relative risk of vehicle occupant death or serious injury 1.00 Baseline + improved delineation shoulder rumble strips roadside clearzone/barriers + wide centreline 1 star 2 stars stars 4 stars

12 Class II Rolling terrain, design speed 60km/h (Typical curve and intersection frequency) Relative risk of vehicle occupant death or serious injury 1.00 Baseline + improved delineation shoulder rumble strips roadside clearzone/barriers + wide centreline 1 star 2 stars stars 4 stars

13 Class II Rolling terrain, design speed 60km/h (Typical curve and intersection frequency) Relative risk of vehicle occupant death or serious injury 1.00 Baseline + improved delineation shoulder rumble strips roadside clearzone/barriers + wide centreline 1 star 2 stars stars 4 stars

14 Class II Rolling terrain, design speed 60km/h (Typical curve and intersection frequency) Relative risk of vehicle occupant death or serious injury 1.00 Baseline + improved delineation shoulder rumble strips roadside clearzone/barriers + wide centreline 1 star 2 stars stars 4 stars

15 Class II Rolling terrain, design speed 60km/h (Typical curve and intersection frequency) Relative risk of vehicle occupant death or serious injury 1.00 Baseline + improved delineation shoulder rumble strips roadside clearzone/barriers + wide centreline 1 star 2 stars stars 4 stars

16 Example of vehicle occupant star ratings L = level R = rolling M = mountainous S = steep Primary Design speed (km/h) Class I Class II L R M S L R M S L R M S Baseline * + delineation + rumble strips + roadside clearzone/barriers + median treatment + int. quality + int. lighting + protected turn lanes + chanelization 1 star 2 stars 3 stars 4 stars 5 stars * Based on typical curve and intersection frequency and roadside hazards

17 Example of vehicle occupant star ratings L = level R = rolling M = mountainous S = steep Primary Design speed (km/h) Class I Class II L R M S L R M S L R M S Baseline * + delineation + rumble strips + roadside clearzone/barriers + median treatment + int. quality + int. lighting + protected turn lanes + chanelization 1 star 2 stars 3 stars 4 stars 5 stars * Based on typical curve and intersection frequency and roadside hazards

18 Example of vehicle occupant star ratings L = level R = rolling M = mountainous S = steep Primary Design speed (km/h) Class I Class II L R M S L R M S L R M S Baseline * + delineation + rumble strips + roadside clearzone/barriers + median treatment + int. quality + int. lighting + protected turn lanes + chanelization 1 star 2 stars 3 stars 4 stars 5 stars * Based on typical curve and intersection frequency and roadside hazards

19

20 Next steps 1. Survey of ESCAP member countries 2. Finalize list of road safety facilities 3. Draft specifications for safety facilities and their expected effect on risk (star ratings) 4. Consultation with ESCAP member countries on draft specifications, including workshop 5. Revision of specifications 6. Finalize specifications