Driver information systems for highway-railway grade crossings. Paper presented at the 51st Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1972.

This paper reports a survey of 259 Indiana drivers used to determine how drivers perceive the relative hazard of highway-railway grade crossings and what their preferences are for the kind of warning that could be used. The researchers found that changeable-message signs were the most preferred of all other devices and passive (static.) signing was the least preferred.