jont wrote:
Wonder what the operators think - there seems to have been a tendency to drop governors on motorways to 52 or even 50 in the name of fuel economy - would a 50 mph limit on A-roads actually be made use of?
The responses to the consultation are rather illuminating on that front. Some operators argued that truck makers optimise their vehicles to be most efficient at 56, and that at 40 drivers frequently have to select lowre gears which increases consumption. Others argued that slower=more efficient.
They cannot both be right which suggests many operators don't have a good handle on this issue.
I did have a friend who drives HGVs his company cut their limiter only to go back when their fuel costs increased.