Police say motorists can expect further anti-speeding campaigns similar to the summer programme.
The two-month campaign ended at midnight on Friday, allowing drivers to travel no more than 4km per hour above the speed limit.
Police usually ticket drivers at 10km per hour over the limit.
National road policing Superintendent Carey Griffiths says they still need to analyse the results of the summer campaign. He says there are no plans to make the lower threshold permanent, but it will feature again this year.
Mr Griffiths says 42 people died in crashes since the beginning of December, 20 percent fewer deaths than in the same period the previous year.