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Safety and Capacity Evaluation of the Indiana Lane Merge System; Final rept
| 题名： | Safety and Capacity Evaluation of the Indiana Lane Merge System; Final rept |
| 作者： | Tarko, A.; Venugopal, S. |
| 关键词： | Construction sites; Merging; Highway safety; Lane changing; Indiana; Guidelines; Rural highways; Traffic management; Traffic control devices; Traffic conflicts; Research; Traffic delay; Automobile accidents; Benefits |
| 摘要： | The entry to a work zone is critical for traffic smoothness and safety because of the discontinuation of one or more lanes. The Indiana Lane Merge System (ILMS) was designed to implement dynamic lane change control at work zone entries by encouraging drivers to switch lanes well upstream of the discontinuous lane taper, thereby reducing the number of aggressive lane changes at the taper. In this study, a new method combining crashes and conflicts is proposed. The relative change in the number of conflicts with and without the system is first established, which is then assumed to be equivalent to the relative change in the number of crashes. This value is then multiplied by the expected number of crashes without the system to obtain the expected crash reduction using the new system. Crash prediction models without ILMS and conflict models with and without ILMS were developed. In addition, a capacity evaluation was conducted to estimate the capacity impact of ILMS. All the models were integrated and a detailed sensitivity analysis was performed by using a spreadsheet-based application that was developed using Visual Basic. The software program also serves as a tool for INDOT personnel to estimate the expected safety and monetary benefits for a given work zone. |
| 总页数： | 176p |
| 报告类型： | 科技报告 |
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