Effectiveness of Accident Risk Information Based on Information Types

抄録

The provision of information on potential traffic accident occurrence risks is aimed at enhancing the safety of drivers and decreasing the accidents by redirecting traffic to safer routes. In addition to accident occurrence risk information, other indicators that can provide road users with incentives to choose safer routes include "accident encounter risk", which indicates the likelihood of encountering accident scenes on an expressway, and "accident loss risk", which indicates the potential financial losses that could occur due to accidents. This study aims to assess the potential impact of these different accident risk indicators on accident reduction by analyzing the effect of providing various accident risk indicators on road users' route choices. Using a route choice model that incorporates accident risk information, we specifically focus on an expressway network in western part of Japan and quantitatively evaluate the accident reduction that could result from providing accident risk information to road users.