Whitebaiters will no longer be allowed to drive vehicles through the Ōtākaro Avon River Corridor Regeneration Area to access the river when the season starts on September 1.
Christchurch City Council head of parks Andrew Rutledge said whitebaiters can still access the river but will need to walk from public roads to their spots.
"The OARC is becoming increasingly popular with recreational users, and allowing vehicles to operate inside the regeneration area where people aren't expecting them creates health and safety issues for everyone," said Rutledge.
"While the vast majority of whitebaiters have used the regeneration area responsibly, last year we received several complaints of vehicles speeding in the area, which increased the risks to dog-walkers, cyclists and pedestrians.