The Hanshin Expressway Public Corporation (HEPC) has already installed systems for preventing secondary accidents at six places on its expressway, producing a favourable result in reducing the rate of secondary accidents to the total number of accidents. The HEPC has this time developed a new Safe Travelling Support system. It measures each vehicle speed and calls attention of a speeding vehicle based on a reference speed according to the wetness condition of the roadway surface and installed it on a trial basis. This paper reports the results of verifying its comprehensive accident preventing measures such as the use of porous asphalt pavement and deceleration markings in curved sections and analysing the distribution of speed data collected by the experimental system.
Samenvatting