原文传递
Development of a Guideline for Work Zone Diversion Rate and Capacity Reduction
| 题名： | Development of a Guideline for Work Zone Diversion Rate and Capacity Reduction |
| 作者： | Kwon, E.; Park, C. |
| 关键词： | Highway capacity##Minnesota##Work zones##Traffic diversion##Simulation##Iterative methods## |
| 摘要： | This study develops a comprehensive guideline to estimate the traffic diversion rates and capacity reduction for work zones. The analysis of the traffic diversion patterns with data from past work zones in the metro freeway network in Minnesota resulted in a set of the diversion-estimation models that relate the diversion rates at freeway ramps with the travel times and speed levels on a freeway and alternative routes during construction. The interrelationship between diversion and work-zone traffic conditions has led to the development of an iterative process, where a freeway simulation model interacts with the diversion-estimation models until a convergence is achieved between diversion and resulting freeway delays. Freeval is adopted in this study as the simulation tool for freeways. The test results of the iterative process with the work zone data showed promising results in determining both the diversion rates and freeway delay for a given work-zone. Due to the types of the work zones used in developing the diversion models, the iterative process developed in this study can be applicable to only 'two-toone' lane reduction cases in estimating the diversion rates for the mainline exit flows, while the diversion rates at entrance ramps can be determined without such restrictions. The capacity analysis of the lane-closure sections performed in this study has also resulted in a set of the suggested capacity values for the work zones with two-toone lane reduction. |
| 总页数： | 225 |
| 报告类型： | 科技报告 |
相关文献
- Improving Work Zone Safety through Speed Management.
- Highway Work Zone Capacity Estimation Using Field Data from Kansas, Final Report.
- Freeway Work Zone Lane Capacity.
- TRAFFIC CAPACITY, SPEED, AND QUEUE-DISCHARGE RATE OF INDIANA'S FOUR-LANE FREEWAY WORK ZONES.
- Impact of Lane Closure on Roadway Capacity. Part C: Modeling Propensity at Work Zones. Final rept.
- Phase 2 - Improved Work Zone Design Guidelines and Enhanced Model of Travel Delays in Work Zones. Part I: Development of Digital Computer Simulation Model. Part II: Baseline Free-Flow Measurements for Diversion Analysis. Part III: Development of Design Gu
检索历史
应用推荐
