A comparison study of five in-vehicle warning information displays with or without spatial compatibility

A driving simulator study was conducted to evaluate the effect of five in-vehicle warning information displays upon drivers´ decision performance. These displays include visual display, auditory displays with and without spatial compatibility, hybrid displays in both visual and auditory format with and without spatial compatibility. In this one factor within-subjects experiment, 30 voluntary drivers were recruited to perform various tasks that involved driving, and stimulus-response (S-R). The corresponding driving performance, response times, and accuracy rates were measured and analyzed. Results show that the drivers´ best performances were obtained for hybrid display with spatial compatibility. Hybrid displays enabled drivers to respond the fastest and achieve the best accuracy in both S-R.