Below are links to travel times from all English Lower Super Output Areas to all English acute hospitals. Please contact me if I have missed any acute hospitals.
Note: 31st March. Travel times for 150 routes (selected at random) were compared with Google maps (clear road conditions; 2am Wednesday morning). Compared to Google Maps, the Open Street Map method under-estimated shorter travel times more than longer travel times. A correction factor was calculated as:
Correction factor = -0.147*ln(OSM_travel_time)+1.872
All travel times are adjusted by this factor in the adjusted travel time data set. This results in a R-square of 0.997 in the training set of data (an independent set of data will be evaluated).