[QUOTE=James Bond]I do agree traffic light's on roundabout's seems kinda silly but at peak times you have so much traffic coming off and on at certain points that the less busy turn-off's don't get a chance.[/quote]
Yeah, sometimes the traffic profile is such that certain entrances would never et a chance to get on to the roundabout. It gives each entrance a chance to go. Also, you can get roundabouts with part-time traffic lights on as well. It's all very obvious when you're in the car, since it''s exactly the same as lots of traffic light controlled junctions.
Same with those "Magic Roundabouts" where you have 5 mini roundabouts laid out in a circle. From the air, they look impossible to navigate, but when you're actually driving around them, you can't see any other mini than the one you're currently going around, so it's just like a few mini-roundabouts in a row.
And as for the Americans, perhaps the reason they can't handle the odd roundabout is because there are so few of them, and they're not used to them? Certainly, I hate driving in London because I hardly ever do it or anything similar, so I'm not used to the style of driving required.
[QUOTE=James Bond]The main issue on the motorways I feel is not the speed but the distance people leave between themselves and the car infront, tailgatting is probably the main cause of accidents, not the speed at which people drive, IMO. Oh and don't get me started on people who stick in the middle lane...or lane hog's...[/QUOTE]
As to the distance thing, the A14 is a prime example - from Cambridge up to Huntington (just before it splits) plenty of accidents (minor ones) along there due to people driving too close to each other becase the road can't handle the volume of traffic.