The bar chart depicts the number of incidents and injuries for every 100 million passenger miles travelled by five different modes of commute in the year 2002.
Overall, the number of accidents and injuries caused by the demand response transportation was the highest, while that of commuter rail was the lowest.
Regarding the two highest figures, the demand-response-related incidents were significantly higher than those of bus-related incidents. In 2002, 225 incidents and 173 injuries per 100 million passenger miles travelled were recorded by the demand-response vehicles, which tripled the number of bus accidents and injuries in the same year, at 76 and 66, respectively.
Looking at the remaining categories, namely heavy rail, light rail, and commuter rail, it is clear that the rail system was safer than the other two transportation types. Light rail experienced the same number of incidents as buses (76), which almost doubled its number of injuries. Fewer accidents and damage were caused by heavy rail, with 51 and 35, respectively. Commuter rail was the safest vehicle, documenting only 20 incidents and 17 injuries, which was far lower than the other categories.