ABSTRACT
A study was carried out using simulation based on desktop virtual reality to investigate driver responses to lineside signals and signs at various approach speeds. The objectives of the study were: to find out whether train speed would significantly affect signal/sign reading, and to examine at which point certain types of signs or signals could be detected or recognised. Approach speed has been found to significantly affect driver detection or recognition of lineside signs and signals. Driver responses were measured either in terms of detection or recognition of signs/signals on approach. The driver then started the formal trial sessions with sign/signal recognition or detection at different speeds in a randomised fashion. The signals/signs were gradually brought into a driver's view and the theoretical onset of these stimuli would depend on many factors. Drivers commented during the trials that, in real life, they often do not need to recognise the signs before reaching them and the signs are used as reminders.
