Strict travel restrictions mean there should be much less traffic on the state's roads this Easter long weekend and far fewer cars driving through our city along the Great Western and Mitchell highways.

But perhaps that makes it the ideal time for the Roads and Maritime Service to finalise the installation of new red light speed cameras at two busy highway intersections, with the cameras likely to be switched on by the end of April.

The cameras are being installed at the intersections of Durham and Bentinck streets along with Stewart and Keppel streets, with thousands of traffic movements every day.

These locations were chosen as they met the NSW speed camera strategy criteria, which includes the frequency and severity of crashes at an intersection, assessment of high road safety risk and regional priorities.

In the five years to 2018, there were 10 crashes at the intersection of Stewart and Keppel streets, seeing 12 people injured, one seriously.

Over the same five-year period, there were six crashes at the intersection of Durham and Bentinck streets, with five people sustaining injuries.

Of course, the cameras alone cannot do anything to improve those statistics - only driver behaviour can do that.

But the RMS hope, clearly, is that the threat of a fine for doing the wrong thing might be the added incentive needed to ensure more drivers do the right thing.

It shouldn't be the case, but that's the reality of all road safety campaigns.

Drivers will get away with what they can - or what they think they can - and visible enforcement is always the best deterrent, whether that be more police on the roads or more cameras watching and waiting for those who break the rules.

And every crash and every injury avoided make the measures well worthwhile.