Conor Faughnan says we're not taking the issue of road safety seriously. It's hard to disagree with him. Speeding is a problem, but not the only problem.
Roads, including the new motorways, are not designed or built with safety in mind. The M11 bypassing Bray is one of the least safe major roads I've ever traveled on. Entrance ramps are too short. Rain water doesn't drain off properly. There is an insufficient barrier between the lanes of oncoming traffic. And, worst of all, near the northern end of the road there are signs indicating that drivers should reduce their speed to 40mph. Some people obey, but just as many don't. So you have a situation where some people are attempting to go at speeds of 70+ while others are moving at 40.