For the record I am not saying that you should drive at 40mph down a residential street. You should drive at a speed that is appropriate to your surroundings i.e. on a narrow street full of parked cars and children playing then 20mph is probably quite fast.
Whatever the safety of cars nowadays, airbags, brakes, seatbelts etc, they count for nothing if a speeding car should hit a pedestrian or cyclist.
Why are people hellbent on speed? Are we meant to be impressed when someone boasts they got from A to B in X amount of time, when normally it takes so long, Bravo good for you!!!!!
One of my step daughters from my 1st marriage was walking on the pavement when a "speeding car" lost control and ran her over. Subsequently she had both legs amputated and lives her life in a wheelchair.
Just my thoughts.
Which surely reinforces my point about the difference of speed, and inappropriate speed. I don't mind and would actually prefer 20mph zones in residential areas, near schools, shopping centres, etc.
Pedestrians aren't at risk on motorways, the traffic is all flowing in the same direction, and the condition of the road and things like visibility are far better than non-motorway roads.
I don't know the stats, but it would be interesting to compare the fatalities and serious injuries on US freeways (with a 55mph limit), to those of the UK (70mph limit) and those of Germany (with some unrestricted autobahns).
I also like the dual speed limits on the French autoroutes. They have a speed limit for dry conditions and another for wet. Displays show the drivers the speed limit they need to adhere to.
The problem with the 70mph limit, in my opinion, is that the speed is completely arbitrary. On Friday when I was driving home from the office in strong winds and some snow, 70mph was too fast. It would have been inappropriate. On a dry, clear day, 70mph is perfectly safe, as is 80mph, 90mph and maybe even faster. I recognise that it's illegal to exceed 70, but that's not what I'm talking about here.
It's more dangerous for someone to answer their mobile phone at 65mph in the middle lane of a motorway (unless they're on a proper hands-free kit), than it is for someone to drive (conditions permitting) at 90mph whilst completely focused on what you're doing.
It's this fascination people have with arbitrary speeds as a means of making driving safer which I have a problem with. Very soon, all new cars will have built in crash-prevention measures (like the Mercs and Volvos have where they measure the distance between you and the car in front and slow your car down if the car in front starts to slow). Will this remove accidents? No. Why? Not because people are going to fast, but because people are driving in a manner that's dangerous. People change lanes without looking, cut up other drivers, drive on the hard-shoulder, etc. Oh, and drink-driving - which is far more dangerous than exceeding the current 70mph speed limit.
(Interestingly as I was writing this, an advert was on telly part of the Think! campaign showing someone on the phone to his wife whilst driving his car. It ends with him having an accident. I'm glad they're not just focusing on speed.)