The Safety Effects Of Central Hatching On Four-Lane Rural Road In Malaysia

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This paper presents the results of the effectiveness of central hatching with regard to speed reduction and improvement in lane discipline on a 4-lane rural road in Malaysia. The study employed a before and after approach to determine if there are significant changes to both the parameters on both periods. The results showed the implementation of central hatching has been effective in reducing vehicle speed as well as lane discipline. The average travel speed of vehicles was found to have significantly reduced by 3 km/h for the after period. A significant reduction in lateral position of vehicles with reference to the median edge line (centerline or central hatching) for the after period suggested that vehicles on the nearside lane travelled closer to the median compared to the before period. It somehow indicates that drivers feel safer staying in their lane to avoid getting into conflict with the opposing vehicles. The findings will provide the road authority with an alternative to physical median when considering road improvement programs on single carriageway road.


Central hatching, perceptual countermeasures, speeding, lateral position

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