Vic drug driver busted twice

A drug-affected, speeding Victorian driver has been caught twice in three hours.

The woman, 33, allegedly tested positive for drugs when pulled over in Mooroolbark in Melbourne's east on Sunday afternoon.

Police imposed a 12-hour driving ban on her, but three hours later she was again caught by police driving erratically on the same road.

The Chirnside Park woman failed a drug assessment and if test results are confirmed, she will be charged with drug driving.

She is also expected to be charged on summons with speeding, failing to obey a lawful direction from a police officer and other traffic offences.