A P plater has been caught doing 81km/h over the signed speed limit in Trott Park overnight.

About 10.50pm Tuesday 4 May police were conducting speed detection duties on the Southern Expressway when they clocked a white Audi travelling at 181km/h in the 100km/h zone.

The car sped past police, with the quick thinking officer radioing patrols who were further ahead who were able to safely stop the Audi on Flinders Drive.

Police spoke to the driver, a 17-year-old Hawthorndene man, checks revealed he held a P1 licence. He was reported for excessive speed, driving at a speed dangerous, and breaching a number of conditions of his licence.

The teen’s car was impounded for 28 days and he will be summonsed to attend at the Christies Beach Youth Court at a later date. The Audi was also defected due to modifications made to the mounting of the number plate.