Police will target jaywalkers and pedestrians who cross roads while using their mobile phone, as part of the "Don't Do Your Dash" operation starting Monday in Melbourne's CBD.

There has been a 30 per cent increase in pedestrian fatalities so far this year, according to Transport Accident Commission figures. 

Officers will target people who incorrectly cross roads, especially pedestrians at traffic lights and tram stops.

Those caught failing to obey traffic lights or improperly walking on the road could be slugged with a $74 fine.

"We don't want pedestrians to be injured or killed while doing something as simple as crossing the road," said Sergeant Mark Rose from Melbourne Highway Patrol.