Managed lanes are expected to reduce congestion and, potentially, vehicle emissions. Usually, planning agencies select lane management strategies first and foremost to improve regional mobility. Furthermore, transportation projects are regulated by the Clean Air Act towards the overall regional emission levels and project-level (or corridor-level) pollutant concentrations. The present study aimed to develop and implement an optimal integrated transportation and emissions modeling platform to evaluate regional vehicle emission and pollutant dispersion impacts and their significance for adding a managed lane facility to the roadway network. The case study examined the Loop 375–Border Highway West toll project in El Paso, Texas, under five proposed lane management strategies. Results confirmed the addition of a priced facility can provide congestion relief at the corridor level and cause some rerouting in other parts of the region. However, they do not appear to substantially reduce regional greenhouse gases and criteria pollutant emissions. The findings of the current study provide further insight within a regional context into selecting a transportation project and its true emission savings and air quality benefits.

管理车道有望减少拥堵，并可能减少车辆排放。通常，规划机构首先选择车道管理策略以改善区域流动性。此外，交通项目受《清洁空气法》对总体区域排放水平和项目级（或走廊级）污染物浓度的监管。本研究旨在开发和实施一个优化的综合交通和排放建模平台，以评估区域车辆排放和污染物扩散影响及其对道路网络添加管理车道设施的意义。该案例研究根据五个提议的车道管理策略检查了德克萨斯州埃尔帕索的 Loop 375–Border Highway West 收费项目。结果证实，增加定价设施可以缓解走廊层面的拥堵，并导致该地区其他地区的一些改道。然而，它们似乎并没有显着减少区域温室气体和标准污染物排放。当前研究的结果为选择交通项目及其真正的减排和空气质量效益提供了区域背景下的进一步洞察。