Vibration was measured in 14 categories of vehicle including cars, lift trucks, tractors, lorries, vans and buses.
A convoy of 100 tractors, lorries and cars led by last year's fuel protest leader, Brynle Williams, later drove past the theatre where Mr Prescott addressed a rally.
A burly man, he worked as a tractor and lorry driver on a Ukrainian collective farm.
Thieves used to winch tractors onto lorries before taking them to sell in eastern Europe, says Tim Price of NFU Mutual.
The National Board for Economic Defence, which is the responsible body for emergency planning of the energy supply, still considers conversion of farm tractors, buses, lorries and passenger cars to gasifier operation to be the only realistic alternative in a sustained petroleum fuel supply crisis.
In another incident, a lorry tractor unit without a trailer was taken from a haulage yard in Whitfield.
This is not like carmaking and it is one reason why Fiat is demerging its car business from its lorry, tractor and machinery arms.
Officers spotted the incident during a three-month pilot scheme which used an unmarked HGV tractor to target lorry drivers breaking the law.
Manual work was defined as time spent doing manual work: including digging or shovelling, driving a lorry, tractor or digger, using vibrating machinery, lifting or moving weights of approximately ≥25 kg by hand.
I've been hit by a tractor, dragged under a lorry and clipped by more wing mirrors than I can recall.
