A quarter of road users killed or seriously injured were bikers
Warning signs are to be put up on some of Gloucestershire's roads to try to cut motorcycling accidents.
Crashes involving motorbikes accounted for a quarter of all road users killed or seriously injured in the county, road safety chiefs said.
The figure was described as being "disproportionately high" compared to the small number of bikes on the road.
Signs urging motorists to 'Think Bike' are to be erected on routes where incidents have happened.
Last year, there were 153 motorcycling accidents, of which four were fatal, 51 were serious and the rest were minor.
Councillor Stan Waddington said: "With nicer weather on its way, more motorcyclists will be tempted out onto Gloucestershire's roads.
"The 'Think Bike' signs are being placed on roads where previous collisions have taken place.
"They are a striking reminder to all road users to look properly before pulling out or overtaking at all times and to remind bikers to look out for the signs and take extra care on bends and in traffic."
The signs, which will remain up until October, will be located on:
• A40 Northleach junction to Little Barrington
• A435 Cowley junction to Cirencester
• A433 from Tetbury to Didmarton
• A417 Hartpury to Bromesberrow
• A436 Adoversford