We report a vehicle-fleet experiment with an economic incentive for keeping within speed limits using a speed-alert device. A traffic insurance scheme was simulated for two months with a monthly bonus that was reduced by a non-linear speeding penalty. Participants were randomly assigned into...

Standard practice in econometric estimation of the value of travel-time changes divides travellers into market segments and assumes linear utility functions in each category. Here instead we derive a RUM-model from a second-order approximation to the utility function. The model is estimated by...