What’s the point of fixed speed cameras?

WHAT use are mobile speed cameras if the vans are marked and the gardaí publish their locations?

It is true this will deter speeding at these locations, but assuming each of the 600 locations covers about 200 yards, this means that for 99.9% of the Irish road network of 100,000km, you can be assured you can drive as fast as you like with impunity.

It goes to show the enforcement of speed limits is considered a mere game rather than a matter of life and death.