Spectators will be prevented from entering the track and will face $17,000 fines at Melbourne's Formula 1 Grand Prix as organisers seek to prevent a repeat of 2023's security breaches.
Australian Grand Prix chair Martin Pakula said event organisers are doing their best to ensure safety for all attendees.
''We want people to be safe, we want people to have fun,'' Mr Pakula said.
"The most significant change is the track walk that normally happens after the last cars are in ... is not proceeding," said Mr Pakula.
Seats have also been slightly moved back on spectator fencing.
There will be fines of up to $17,000 for anyone who attempts to move on to the track.
Grand Prix general manager Tom Mottram urged spectators to heed the warnings.
"We ask people to respect the rules that we have in place, it is really important that we follow those rules because we want to keep putting on this event and grow it bigger and bigger every year,'' he said.
''It goes without saying, motorsport is inherently dangerous but that's all part of the fun."
Spectators broke through security barriers and accessed the track towards the end of the 2023 race, with some reaching the car driven by Haas's Nico Hulkenberg as it was parked at the exit of turn two.