Rising transport emissions represent a significant challenge for policy makers. Two principal options exist to reduce emissions: make driving less polluting or reduce driving overall. Though cities have a role to play in both approaches, the levers that may influence the latter more squarely align with municipal competences concerning the urban form. This paper aims to refine our understanding of the relationship between urban form, public transport systems, and driving behavior by exploring whether accessibility—the ease of reaching desired destinations—exerts a different influence on people’s decision to drive on weekdays and total distance driven depending on travel purpose. We relied on disaggregate data from the 2013 Montreal Origin–Destination Survey and employed a two-step “hurdle” approach with multilevel logistic and linear models. We found both local and regional accessibility displayed statistically significant negative correlations with driving mode choice and vehicle distance driven by drivers. Concerning the decision to drive, regional accessibility, defined by transit-accessible jobs, appeared to possess a stronger relationship than local, as measured by Walk Score across all purposes. When considering total kilometers driven, however, the relative impact of both types of accessibility varied. Overall, and for work and school driving, regional accessibility correlated with the greatest declines in distance driven. For healthcare and discretionary travel, local accessibility correlated with a larger decline in total driving distance. Our findings also highlight the potentially profound impact of other explanatory factors, particularly car ownership, suggesting additional policy approaches for municipal decision makers to reduce vehicle kilometers traveled.

运输排放量的上升对政策制定者构成了重大挑战。存在两种主要的减少排放的选择：降低驾驶的污染或减少总体驾驶。尽管城市在这两种方法中都可以发挥作用，但可能影响后者的杠杆与市政当局在城市形态方面的能力更加吻合。本文旨在通过探索可到达性（到达所需目的地的难易程度）是否对人们在工作日做出决定以及对总行驶距离的决定是否产生不同的影响，从而加深我们对城市形态，公共交通系统与驾驶行为之间关系的理解。旅行目的。我们依赖于2013年蒙特利尔起源-目的地调查的分类数据，并采用了多级逻辑和线性模型的两步“障碍”方法。我们发现本地和区域可访问性与驾驶方式选择和驾驶员驾驶的车辆行驶距离均显示出统计学上显着的负相关。关于驾驶的决定，由步行可及性工作定义的区域可及性似乎比地方性具有更强的关系，这在所有目的上都可以通过步行得分来衡量。但是，在考虑行驶的总公里数时，这两种类型的可达性的相对影响是不同的。总体而言，就工作和学校驾驶而言，区域可达性与行驶距离的最大下降有关。对于医疗保健和自由旅行，当地的可达性与总行驶距离的较大下降相关。我们的研究结果还强调了其他解释性因素（尤其是汽车拥有权）可能产生的深远影响，