He's right too. Whether you like it or not 70mph is 70mph. You can't argue against his position without condoning law breaking.
Yes you can. There are a surprising number of cars that can legally break the 70mph limit without the use of lights and sirens. Section 87 Road Traffic Regulation Act 1984 says:No statutory provision imposing a speed limit on motor vehicles shall apply to any vehicle on an occasion when it is being used for fire brigade, ambulance or police purposes, if the observance of that provision would be likely to hinder the use of the vehicle for the purpose for which it is being used on that occasion.
It makes no reference to lights or sirens being necessary, though of course it is the norm. I won't go into all of the permutations, but trust me they exist - though of course I accept they are the minority. One I'll give you is fire, ambulance or police vehicles heading to a jumper on the motorway threatening suicide - sirens and lights are likely to hinder the situation here, yet we need to get there ASAP.
Now, there's the other fact - the ten percent discrepancy shown by speedos. This gives margin of error. You may be travelling at an indicated 70, with your true speed being 63. Why should you hold up someone doing a true calibrated 70?
Thes also the effect of braking on a congested motorway. If its busy and you hog the middle lane, you make the left lane unusable. If someone ahead brakes, the braking effect goes down the queue, getting slightly longer at each stage. On a congested motorway, two miles down the road this can cause the 'come to a stop for no reason' effect. If this happens to your lane, and you are in the middle, you transfer the effect to the left lane if no one wishes to break the law and undertake.
It's not hard - the left most lane is for driving. The middle and outer lanes are for overtaking only.