| Title | Estimation of Accident-Induced Emissions and Energy Consumption |
| Dept | Transportation Safety Division |
| Year | 2014 |
| Month | |
| Price | |
| Summary | Correctly estimating the social cost of road traffic accidents is not only one of the key issues in traffic safety studies, but it is also an important piece of information for related policy decision making. Numerous studies have been conducted to estimate the internal cost of accidents, including the life cost, medical cost, and property damage cost. However, in addition to the social cost of parties directly involved in an accident, upstream traffic may also be negatively impacted. To completely and correctly assess the total social cost of an accident, considering both internal and external costs simultaneously is essential.
The external cost of an accident mainly comes from the traffic delay due to the capacity reduction (lanes blocked) caused by accidents. These delays will further result in additional energy consumption and emissions (CO2, CO, HC, etc.). In order to accurately estimate the external cost of an accident, this study proposes a systematic framework that integrates several sub-models, including a crash severity and frequency model, an accident impact model, a traffic delay model, an energy consumption and emissions model, and a willingness-to-pay model for emissions. This study also attempts to localize these models through data collection, a literature review, a questionnaire survey, and model estimation so as to estimate the external cost of various types of accidents under various traffic flow, traffic control and road conditions. |
| Post date | 2014/12/15 |
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