Abstract
This paper compares two types of driving support systems for collision avoidance with a crossing pedestrian. Type 1 system enhances braking force when the driver hits the brake. Type 2 system operates the car autonomously with steering operation. Both Typel and Type 2 systems warn the driver of the danger of collision with a pedestrian if the car comes closer to the pedestrian. A cognitive experiment with a driving simulator was conducted to investigate efficiency of Type 1 and Type 2 systems. The result showed that both Type 1 and Type 2 were effective to improve the safety and that participants' workload was decreased. However, if participants' intention differed with the system's one, the acceptability is inferior to Type 1.
