Conor
4 or 5 minutes. Perhaps that's a little tardy, but OK for those circumstances where the truck would have problems regaining speed - i.e. steep upgrades. On the flat or downhill you should grow the gap more quickly.
Whilst I have no problem believing that HGVs cannot accelerate up hill I don't find it credible that they cannot maintain a speed slightly lower than one they could maintain - the power-band is not *that* narrow - especially if you have cruise control, like you do.
I can understand that you would be keen not to lose way significantly going up hill so it might be wise to establish a larger gap before an upgrade so that overtaking vehicles will naturally maintain separation for you.
It is the tailgating lorries which are compounding their poor driving by failure to anticipate that traffic might wish to exit at exits and to merge into l1 at the entrances which usually follow.
All you have to do is grow a bigger gap before the hill, just in case - max delay 2s.
Yes. If you arrive at a point 4s behind a vehicle ahead rather than 2s behind you have been delayed 2s. Fact, independent of HGV driving experience.
A
