Rural School Bus Routing and Scheduling
Long school bus rides adversely affect student performance and well-being. Rural school bus rides are particularly long, incentivizing parents to drive their children to school rather than to opt for the school bus. This in turn exacerbates the traffic congestion around schools, further compounding the problem of long bus rides, creating a vicious cycle. It also results in underutilized school buses and higher bus operating costs per rider. To address these challenges, this paper focuses on the design of rural school bus routes and schedules, a particularly challenging problem due to its unique operational complexities, including mixed loading and irregular road networks. We formalize a rural school bus routing and scheduling model that tackles these complexities while minimizing the total commute time of students. We develop an original road network-aware cluster-then-route heuristic that leverages our problem formulation to produce high-quality solutions. For real-world case studies, our approach outperforms status quo solutions by reducing the commute times of students by 22-25 %. Our solutions also make the school bus more attractive, helping address both the underutilization of school buses and the prevalence of car commutes. Our routing and scheduling approach can improve school bus use by 14-15 % and reduce car trips that induce congestion near schools by 10-13 %. Many rural school districts share the operational characteristics modeled in this study, including long bus rides, high operational expenditures, mixed loading, and a high proportion of car-based school commutes, suggesting the broad applicability of our approach. Ultimately, by reducing student travel times, increasing school bus utilization, and alleviating congestion near schools, our approach enables rural school district planners to address transportation-related barriers to student performance and well-being.