The bar chart illustrates the frequency of incidents and injuries per 100 million passenger miles traveled (PMT) across five distinct transportation categories in 2002. Overall, it is evident that Demand Respond services were the most hazardous, whereas Commuter Rail was the safest mode of transport.
Demand Respond recorded the highest figures by a substantial margin, with 225 incidents and 172 injuries per 100 million PMT. In contrast, Commuter Rail reported the lowest rates, with 20 incidents and 17 injuries. The remaining categories showed moderate figures. Heavy Rail, Light Rail, and Bus services all exhibited lower incident and injury rates than Demand Respond but higher than Commuter Rail.
Specifically, Light Rail and Bus services shared an identical incident rate of 75 per 100 million PMT. However, Bus services resulted in a higher number of injuries at 65, compared to 38 for Light Rail. Heavy Rail occupied a middle position, reporting 50 incidents and 35 injuries. Across all categories, the number of incidents consistently exceeded the number of injuries, with the most pronounced gap observed in the Demand Respond sector, where the difference reached 53 units.