HM REVENUE and Customs plans to stop concrete boom trucks and road sweepers using cheaper red diesel.
Sweepers are currently categorised as road construction plant on the exempted vehicle list, but the category is to be removed altogether at the next Budget when the chancellor reviews diesel entitlement.
At present road sweepers have to use white diesel for general highway work but are allowed to use the discounted fuel when sweeping on road construction jobs and other such sites. Concrete pumps can presently use red diesel all the time.
But the Revenue says that in the future sweeper owners will have to apply for a statutory off-road notice each time they use red diesel.
Colin Wood, chief executive of the Construction Plant-hire Association, which is gathering responses from users of the affected plant, said: 'In practice this would mean more costs and more paperwork.
'Who is going to want to apply for an off-road notice for a week's hire?'