Police are bracing for more vehicle deaths over the holidays, but have welcomed a drop in road incidents so far.

Operation Safe Arrival is nearly half over and seven people have died on NSW, with five of those deaths occurring on Boxing Day.

Last year, 13 people had died halfway through the same holiday road toll period.

Traffic and Highway Patrol commander Bob Ryan said more people would die in the lead-up to New Year's and as people make their way home after the holidays.

"Hopefully not, but the sad reality is it will probably happen," Superintendent Ryan told reporters on Friday.

"It's heartbreaking really when you look into a mother's eyes and tell her that their son or daughter has been killed in a car accident.

"It just turns to a vacant stare as the realisation sets in."

So far, 378 people have been charged with drink driving, a drop of 49 from the same period last year.

Speeding offences have risen slightly to 5752, an increase of 130, and non-speeding infringements have dropped nearly 10 per cent to 8046.

* The national road toll period runs from 0001 (AEDT) December 23, 2012, until 2359 January 3, 2013, local times, in line with the Australia New Zealand Policing Advisory Board.