A P-plate driver has filmed themselves clocking speeds of more than 200km/h while driving through a busy tunnel in Sydney.

The clip was uploaded to video-sharing social networking app TikTok, though it is unclear exactly which tunnel the car is travelling through.

Police are now investigating the video

It is the second clip, showing excessive speeding, to be uploaded to the same social media account in recent weeks.

I’m speechless to be honest, (200km/h) by a p-plater, in a metro area, in a tunnel is just completely reckless and a car at that speed is a weapon. Its extremely dangerous and no doubt we will be looking for that driver.

Karen Webb – NSW Police Assistant Commissioner

Double demerits are in force across NSW from today until midnight on Monday to coincide with the long weekend and school holidays.