Quote Originally Posted by dml1954 View Post
Have you ever tried using cruise control in a steady three lanes of traffic doing 50mph ? Impossible and very dangerous. The flow of traffic is fine until you meet the 50mph restrictions and then everything concertinas and comes to a grinding halt. There is more lane jumping, pollution and traffic jams on this section of motorway now than there was before they had the restrictions in place. Its just a money raising exercise.
Driving at 70 means you arrive at the congestion sooner spurting out your pollution for longer in stationary traffic. Youre also using more fuel at 70. Driving at 50 keeps you moving for a longer time creating less pollution and uses less fuel.