Government figures show that an increasing number of motorcyclists are exceeding speed limits, according to the RAC.
The RAC points to data from the DfT which shows that 50% of motorcycles exceeded speed limits on British motorways, dual carriageways and 30mph-limit roads last year.
Figures also reveal that in 2009, 114,900 new motorcycles were registered – the lowest yearly number since records began in 2001.
While the proportion of licensed machines with an engine size of more than 500cc went up to 75% in 2009 from 45% in 1999, the proportion of machines of 50cc or lower dropped to 11% in 2009 from 14% a decade ago.
The figures also reveal that in total there were 1.3 million licensed motorcycles in Britain by the end of 2009, 87% of which were registered in England.
Motorcycles drove about 3.2 billion miles on Britain’s roads last year – about 400 million miles more than 10 years ago, but well down on the 6.2 billion mile figure when biking was at its peak in 1960.
Click here to read the full RAC report.