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Table 1 Road speed estimates used to calculate car travel times

From: Validation of travel times to hospital estimated by GIS

Road Type Average Road Speed (mph)
  Rural Urban
Motorway 63 35
A-Road Primary Dual Carriageway 54 28
A-Road Dual Carriageway 50 25
A-Road Primary Single Carriageway 45 25
A-Road Single Carriageway 32 18
B-Road Dual Carriageway 36 18
B-Road Single Carriageway 24 12
Minor Road 14 11