Motorists are being urged to slow down and take extra care as wet weather hits Melbourne ahead of the afternoon peak.
The Department of Transport said the bad weather should prompt drivers to reduce their speed and use extreme caution.
“Drivers are reminded to ensure they leave extra space between them and the car in front, as braking distances increase in wet conditions,” the department said.
“Be sure to turn headlights on and be extra vigilant for cyclists and motorbikes which are harder to see.
“If the rain becomes too heavy for wipers to cope, pull over safely and wait for the rain to pass.
“Never walk, ride or drive through flood water.
“Make sure loads are secure, particularly on elevated roadways. Pay attention to overhead signage as speeds will be reduced if winds increase.”
Drivers are urged to report hazards to the transport operations centre on 13 11 70.