Forecast temperatures of 35 degrees in Bendigo have led to V/Line enacting a partial extreme heat timetable in central Victoria.
Passengers and commuters expecting to use train services today are urged to check any timetable changes at their local station.
Heat forces the steel tracks to expand, forcing trains to slow from 160km/h to 90km/h. It means journey times may be extended by a few minutes.
Temperatures in Bendigo are expected to reach 40 degrees tomorow and Friday.
For more details on V/Line's extreme heat timetables visit www.vline.com.au