New Study: Small Change in School Start Times Could Reduce Morning Traffic Congestion

Cities could see a significant reduction in morning traffic jams if schools adjusted their start times, according to a new study by researchers at the University of Cyprus. The study, submitted to the journal Transportation Research Part C: Emerging Technologies, examined the link between school commutes and daily congestion. Researchers noted that when schools begin at the same time, traffic becomes concentrated in a narrow window. Parents dropping off children then merge with other workers heading to their jobs, exacerbating rush hour.

Previous research cited in the study highlighted the impact of schools on traffic. A Beijing study found traffic congestion 20% lower during school holidays, while another noted a 4.5% increase in congestion probability when schools started simultaneously. The Cyprus researchers developed a model to test if varying school start times could better distribute commutes and ease congestion.

Using a simulated urban environment with 50 schools, the researchers found that increasing the flexibility of start times reduced the total time vehicles spent on the network. In a scenario allowing a total variation of 600 minutes across the 50 schools, the optimization model achieved a 17.2% reduction in total vehicle network time compared to a scenario with no changes. This 600-minute variation equates to an average shift of just 12 minutes per school.

The model allocated these changes based on network needs, with some schools starting earlier, others later, and some maintaining their original schedules. The researchers cautioned that these results stem from a specific simulation and do not guarantee the same percentage reduction in real-world cities. However, they emphasize that even small, staggered adjustments could effectively distribute traffic flow and lessen the daily urban grind.