Drivers get the message about low speed tolerance level for December-January period.
All speed cameras across the country have been recalibrated with the new 4km/h speed tolerance as part of the police push to reduce summer road deaths.
The summer push began on Sunday and police assistant commissioner of road policing Dave Cliff said drivers appeared to be paying attention.
The 12 fixed cameras around the country and 44 mobile cameras were manually calibrated to the 4km/h threshold by technicians for the start of the December 1-January 31 campaign, he said.
It was too early to analyse the first day's data, but anecdotally, he said, the lower threshold had already caught at least one dangerous driver.