Citation

Ezoe T, Okuyama H. Proc. Int. Tech. Conf. Enhanced Safety Vehicles 2005; 2005: 3p.

Copyright

(Copyright © 2005, In public domain, Publisher National Highway Traffic Safety Administration)

DOI

unavailable

PMID

unavailable

Abstract

As one of the key technologies to improve the safety of large trucks, pre-crash safety technology (PCS) was studied. PCS is the system which automatically activates the brake when a collision is unavoidable. From the accident analysis, it was determined that collisions with stationary vehicles and accidents on expressways would be considered in this study. To cope with the accidents on expressways where collision speeds are usually high, the PCS system needs to detect the objects and apply the brake from a long distance. To achieve this, the sensor should be tuned to enable long distance sensing. Generally this can result in difficulties to clearly divide real objects on the road and something on the roadside, especially at curves. If the activation of the system can be limited to only on expressways, there is a possibility that this can be improved, because on the expressways traffic lanes are wider and thus roadside objects are a little far from the center of the traffic lane, and the radii of curves are more than a certain value. Activation timing of the brake should be decided so that the driver does not place too much trust in the system. For this reason, the brake should not be activated when there is certain possibility that the collision is avoidable.