A police officer is in hospital, after a car smashed into a police van at St Albans, in Melbourne's west, last night.
Police say two constables were driving with lights and sirens on, when another car ran a red light at the intersection of Main Road and East Esplanade and crashed into them.
One officer suffered minor injuries.
The 74-year-old driver of the other car returned a positive blood alcohol reading.
Sergeant Mick Downes says the officers were on their way to another incident at the time of the crash.
"[The] Keilor Downs van was responding to another accident. A car had gone into the fence of a school," he said.
"They were responding to that. Coming through the intersection, they looked both ways, appeared to have the green light and went straight ahead and a car came from another direction and hit them."
Sergeant Downes says drivers have to be aware of what they are doing.
"When they see a car, whether it be a police vehicle a fire vehicle or an ambulance, when they got their lights and sirens, just to make room for them and drive safely," he said.