Police will use airport-style walk-through metal detectors at a suburban train station as they go to extraordinary lengths to find commuters carrying weapons.

Officers will use walk-through metal detectors and hand-held wands to carry out random weapons checks at Dandenong train station under Operation Protect in a pre-Christmas safety blitz on Friday night.

The police blitz will be carried out at Dandenong train station. Credit:Penny Stephens

Inspector Graham Higginbotham from the Transit Safety Division said the operation was designed to help remove knives, weapons and drugs from public transport.

"Police will make their presence felt at Dandenong railway station tonight," he said.