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A closer look at urban development under the emergence of autonomous vehicles: Traffic, land use and air quality impacts
Journal of Transport Geography ( IF 5.899 ) Pub Date : 2021-06-05 , DOI: 10.1016/j.jtrangeo.2021.103113
Razieh Nadafianshahamabadi , Mohammad Tayarani , Gregory Rowangould

Autonomous vehicles (AVs) hold great promise for increasing the capacity of existing roadways and intersections, providing more mobility to a wider range of people, and are likely to reduce vehicle crashes. However, AVs are also likely to increase travel demand which could diminish the potential for AVs to reduce congestion and cause emissions of greenhouse gases (GHG) and other air pollutants to increase. Therefore, understanding how AVs will affect travel demand is critical to understanding their potential benefits and impacts. We evaluate how adoption of AVs affects travel demand, congestion and vehicle emissions over several decades using an integrated travel demand, land-use and air quality modeling framework for the Albuquerque, New Mexico metropolitan area. We find that AVs are likely to increase demand and GHG emissions as development patterns shift to the region's periphery and trips become longer. Congestion declines along most roadways as expanded capacity from more efficient AV operation outpaces increasing demand. Most of the population can also expect a reduction in exposure to toxic vehicle emissions. Some locations will experience an increase in air pollution exposure and traffic congestion from changes in land-use and traffic patterns caused by the adoption of AVs.



中文翻译:

仔细研究自动驾驶汽车出现下的城市发展:交通、土地利用和空气质量影响

自动驾驶汽车 (AV) 有望提高现有道路和交叉路口的容量,为更多人群提供更多的机动性,并有可能减少车祸。然而,无人驾驶汽车也可能增加出行需求,这可能会削弱无人驾驶汽车减少拥堵并导致温室气体 (GHG) 和其他空气污染物排放增加的潜力。因此,了解自动驾驶汽车将如何影响旅行需求对于了解其潜在利益和影响至关重要。我们使用新墨西哥州阿尔伯克基大都市区的综合出行需求、土地利用和空气质量建模框架,评估几十年来采用自动驾驶汽车对出行需求、拥堵和车辆排放的影响。我们发现,随着发展模式转向该地区的外围和出行时间变得更长,自动驾驶汽车可能会增加需求和温室气体排放。大多数道路的拥堵情况有所减少,因为更高效的 AV 运营带来的容量扩大超过了日益增长的需求。大多数人还可以期望减少接触有毒车辆排放物的机会。由于采用自动驾驶汽车导致土地使用和交通模式的变化,一些地方将面临空气污染暴露和交通拥堵的增加。

更新日期:2021-06-05
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