Interim Report on the Development of Road Safety Infrastructure Facility Design Standard for the Asian Highway Network
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1 Development of Road Infrastructure Safety Facility Standards Expert Group Meeting on Asian Highway United Nations Economic and Social Commission for Asia and the Pacific 3-4 October 2016 Interim Report on the Development of Road Safety Infrastructure Facility Design Standard for the Asian Highway Network Julian THG KWONG Road Safety Consultant
2 Contents Background and Objectives Basis of the Work Scope of the Design Standard Development of Contents
3 Overview Formulation of a design standard with both mandatory requirements and recommendations Asian Highway Network member countries shall make every effort to comply with the design standard within reasonable timeframe Applications Online highway improvement or upgrading projects New bypass projects New addition of roads to the Asian Highway Network Dedicated road safety improvement projects Routine maintenance activities
4 Objectives of the Design Standard Vision Zero Zero Death or Serious Injuries Best performing countries Long Term Three-Star Rating Current Situation
5 Diversity of Asian Highway Routes Google Street View Google Street View
6 Diversity of Asian Highway Routes Google Satellite
7 Current Status of the Network Development towards more Primary, Class I and Class II roads Class III roads and below will continue to exist for some time Class I roads have the highest fatality rate by km Class II/III roads have the highest fatality rate by veh-km
8 Contents Background and Objectives Basis of the Work Scope of the Design Standard Development of Contents
9 Intergovernmental Agreement on The Asian Highway Network RIFs Output from irap Work Flow Information from AH Participating Countries (Bangladesh, China, India, Korea, Thailand) Key References - AASHTO/FHWA - Korean Standard International References - UNECE-TERN - Europe/Australia etc - International organizations Output by Korea Expressway Corporation (KEC) Integration by Consultant in collaboration with KEC Design Standard
10 International References Selection Criteria Well-performing countries Pioneering design concepts and practices Design standards accessible 36 Fatalities per 100,000 Population Asian Highway Network member countries mainly Singapore Japan US International reference countries Canada Australia France Germany Norway Netherlands Switzerland United Kingdom Sweden < 5
11 United States - AASHTO Standards - Forgiving Roadside - MUTCD International References Netherlands - Sustainable Safety - Self-explaining Roads - Traffic calming - Bicycle infrastructures Norway - Vision Zero - Mountain roads France - Expressways - Mountain roads - Intersections/Roundabouts Sweden - Vision Zero Roads United Kingdom - Aggressive research - Elaborate design standard - Innovations Germany - New Rural Road Design Standard Australia - Vigorous developments - Abundant research
12 Trans European Road Network (TERN) Trans-European Motorway (TEM) International E-Roads Contiguity/Overlap with Asian Highways Road design standards for TERN, TEM and tunnels
13 UNECE Design Standards
14 Contents Background and Objectives Basis of the Work Scope of the Design Standard Development of Contents
15 Proposed Design Standard Annex I ASIAN HIGHWAY NETWORK INTERGOVERNMENTAL AGREEMENT ON THE ASIAN HIGHWAY NETWORK Annex II ASIAN HIGHWAY CLASSIFICATION AND DESIGN STANDARDS Annex III IDENTIFICATION AND SIGNAGE OF THE ASIAN HIGHWAY NETWORK Annex IV ASIAN HIGHWAY ROAD SAFETY INFRASTRUCTURE STANDARDS Mandatory APPENDIX 1 RIF DESIGN GUIDELINE Recommendations
16 Considerations Long term vision Vs Short term issues Feasible across different countries Compatibility with national standards/practices Harmonization of practices Flexibility with alternative solutions Amenable to updating Subtle use of wordings shall (mandatory) should (highly recommended) It is advisable to (recommended) may (optional depending on circumstances)
17 Road Infrastructure Facilities (RIFs) selected by irap A-1 Line marking A-2 Chevron mark A-3 Raised pavement marker A-4 Flexible delineation posts B-1 Roadside barrier B-2 Median barrier B-4 Central Hatching B-5 Crash cushion with channelization B-6 Safety barrier end treatment B-7 Clear Zones C-2 Centreline/Edge line Rumble Strip E-1 Protected turn lane E-2 Intersection Channelization E-3 Roundabout F-1 Speed hump F-2 Visual Traffic Calming F-3 Automatic Regulation Cameras G-1 Bicycle Lane G-2 Exclusive Motorcycle Lanes H-2 Lighting H-7 Sight distance D-1 Pedestrian crossings D-2 Sidewalk (footpath) D-3 Pedestrian Fences D-4 Pedestrian Refuge Island Anti-glare Facilities
18 Potential Road Safety Topics for Inclusion Integration into the design standard is recommended Road Network Development Road Infrastructures Overtaking Strategy Parking Areas, Service Areas, Rest Areas Long steep grades Climbing lanes Service roads Wrong-way driving Wildlife facilities Noise abatement Facilities Tunnels Intersections Grade-separated Interchanges U-turn facilities At grade railway crossings Road Signage Traffic Signs Directional signing Asian Highway signing Speed Limits
19 Road Network Development Interface Issues X X X X Temporary termination via interchange Temporary termination onto existing roads Class 1 Class 2 Multi-lane roads onto existing alignment Class 3 Class 2 Class 3 Online geometry onto existing alignment Class 2 Class 1 Class 2 Online improvements
20 Contents Background and Objectives Basis of the Work Scope of Design Standard Development of Contents
21 Proposed Annex IV Road Safety Infrastructure Standard
22 Rock Slope (aggressive) Guarded by Safety Barrier Roadside Safety and RIFs Median Safety Barrier Shoulder Passively Safe Sign Safety Zone comprising Shoulder and Clear Zone Clear Zone Google Street View
23 Sample Texts of Annex IV Sample
24 Traffic Calming for Towns and Villages Gateway Sign Major village Market town 50 (40) 60 (70) 80 (70) Traffic Calming with Speed Management Small villages Isolated houses Enhancement of safety level
25 RIF Design Manual Definition and Functions WHAT & WHY Provision Criteria WHERE & WHEN Locations Conditions for application Technical Requirements HOW Layout, Dimensions Capacity, Performance, testing standard Construction, operation, maintenance Precautions Targeting at critical issues and common concerns
26 RIFs are interdependent of each other Priority intersections on Class I roads Involve median barriers, protected turn lane, side road channelization island, visibility, end treatments, signing/markings, speed limit etc Google Satellite
27 V =< 8km/h RIF : Chevron Marks Within the context of a bend signing system 8km/h < V =< 16km/h Source: CEREMA, France 16km/h < V =< 40km/h V > 40km/h If poor visibility around bend Enhance measures exceptionally according to circumstances
28 Provision Criteria Sharp bends which RIF : Chevron Marks requires approach traffic to reduce speed substantially are not conspicuous due to an open background are not clear due to presence of intersections or tangential features have poor visibility Technical Requirements Sign height between 600mm and 900mm Facing drivers at right angle Mounting height ~ 1m-1.5m, higher for crests Installation intervals Passive safety
29 RIF : Protected Turn Lanes (Hatched Markings) Reduces risk of rear-front collisions Encourages more cautious maneuvers Google Street View
30 RIF : Protected Turn Lanes (Hatched Markings) Provision Criteria Crossroad and T-intersections with turning traffic >300 vpd Technical Requirements Symmetrical or asymmetrical layout Turning lane between 3.0m and 5.0m Through lane between 3.0m and 3.5m Hard shoulder >1.75m (1.5m min) if used by pedestrians and slow traffic Geometry based on approach taper, diverge taper, deceleration length and queuing length Possible enhanced delineations
31 Priority Intersections Need to regulate types of intersections permitted Strict requirements for Class I roads Source: CEREMA, France
32 Sample Texts under Development
33 Development of Road Infrastructure Safety Facility Standards Expert Group Meeting on Asian Highway United Nations Economic and Social Commission for Asia and the Pacific 3-4 October 2016 Interim Report on the Development of Road Safety Infrastructure Facility Design Standard for the Asian Highway Network Julian THG KWONG Road Safety Consultant
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