A broken down car in the outside lane of State Highway One at Hampton Downs is causing drama for drivers going south from Auckland for the long weekend.

Police are on the scene to clear the vehicle and direct traffic.

But concerned driver Jacob Brown says it's potentially a dangerous situation.

"There's a few blind corners around here so a lot of the drivers are coming in at about 100kms going south, and then they're only seeing the queue at the last minute so they're having to swerve to the side of the road to avoid slamming into the next person."