School Journeys Percentage of casualties on journeys to / from school: 14% of total pedestrian casualties 43% of child pedestrian casualties
Impact of Speed on Casualty Severity If a pedestrian is hit by a car, the chance of being fatally injured is: 2.5% at 20mph 20% at 30 mph [Source: 20 mph Zones and Speed Limits – RoSPA November 2012]
Effectiveness Portsmouth All casualties down by 21% KSI casualties up by 9% Bristol (1 year after data) Casualties down by 4% Warrington All casualties up by 12% (Orford area -6%, town centre +12%)
Impact on Bus Routes Quality Bus Infrastructure in Hertfordshire: “Traffic calming measures can reduce the attractiveness of a bus route” “20 mph for a car means less than 10 mph for a bus” “Road humps are not acceptable on bus routes”
Actual Effect Bristol Bus journey times and reliability not adversely affected.
Summary Reducing actual speed will reduce the severity of injuries Evidence for effectiveness of 20 mph limits on casualties is mixed, but generally positive 20 mph limits will not address the biggest problem i.e. 17 – 25 y.o. drivers Impact on bus routes is not clear
Transport, Access and Safety Trevor Mason Safe and Sustainable Journeys Manager