6.9.2. While the occurrence of road accidents cannot be reduced by physical traffic management measures alone, traffic management can do much to alleviate specific problems – particularly those arising from past poor traffic engineering designs or from known conflicts. Accident countermeasures may range from:
a) simple actions such as improved road marking and signing to ensure that drivers receive clear, unambiguous directions to
b) junction modifications such as re-phasing traffic signals or prohibition of some movements to reduce conflicts or minor realignments to
c) comprehensive re-design or treatment of road sections to balance the needs of all road users and to provide safe facilities.
6.9.3. A well-run "traffic management agency" should approach safety on a comprehensive basis - safety considerations should be part of all scheme planning and design. It is likely that, in the past in many cities, safety has not been a prime consideration as traffic growth has continued and as traffic agencies have struggled to keep up with the
provision of enhanced system capacity. A priority task for a "traffic management agency" should be the conduct of a safety review of its city's traffic system and preparation of a comprehensive traffic management “safety” program. The program would be integrated with the overall traffic management strategy described in Chapter 3 (stressing “capacity” for people not vehicles) and is likely to include:
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Components of a comprehensive, traffic management review and program aimed at accident reduction It is axiomatic that all traffic schemes should be designed with safety in mind. Designs should encompass the needs of all road users - motorized vehicles, public transport vehicles, non motorized vehicles and pedestrians. However, a review of the safety aspects of the traffic system and a comprehensive program aimed specifically at reduction of traffic accidents will include some or all of the following actions: Road and Junction Layout - changes may be necessary in road or junction layouts to ensure: § vertical and horizontal alignments (including adequate sight lines) are adequate to allow safe operation at the prescribed speed for all motorized and non motorized vehicles § traffic conflicts which could arise from lack of lane consistency, variations in cross section are eliminated by either physical works or by Road Surface – changes may be necessary to roads and other surfaces § to reduce likelihood of motorized vehicles skidding § to repair unevenness and/or-pot holes to prevent hazardous avoiding action by vehicles especially by two wheel motorized and non motorized vehicles Road Markings-Signing-Lighting – changes may be necessary to: § road markings and signing to ensure that drivers and other system users receive clear, unambiguous warnings of hazards and are directed along prescribed routes, lanes etc § street lighting (which will have security as well as road safety benefits) Traffic System Management – changes may be necessary to: § speed limits to ensure they are consistent and appropriate § removal of hazardous-obstructive parking § elimination of conflictive traffic movements at junctions, to/from side roads etc by improved junction controls such as clearly defined priorities, signal control, roundabouts. § segregation of vulnerable modes from motorised modes through provision of adequate, well maintained footways[19], pedestrian only schemes, NMT lanes etc § facilities to provide safe and convenient pedestrian crossing of roads § facilities to provide safe bus stopping and passenger access to/from stops |
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