Validation of a bicycle simulator for road safety research.

The study's aim was to assess the behavioural validity of participants using of a newly developed bicycle simulator with respect to a range of cycling performance measures collected both using the cycling simulator and on-road. The validation study consisted of a within-subjects study design comparing participants riding on-road with riding in the simulator. The study recruited 26 participants ranging in age from 18 to 35 years (M=25.0, SD=4.8). Absolute validity was established for measures of spatial positioning including average lane position, deviation in lane position and average passing distance from kerbside parked cars. Relative validity was established for the average speed of cyclists and their speed reduction on approach to intersections and a degree of validity was established for aspects of the participants head movements on approach to intersections. The study found evidence to suggest that aspects of cyclist behaviour can be investigated using the bicycle simulator, however further validation research may be required in order to more comprehensively validate looking behaviours, more complex performance measures and for a wider age range of cyclists.