
Police Assistant Commissioner for Traffic Noel Ashby said over the summer period police had spotted motorcyclists wearing little more than shorts and tshirts.
"The Motorcyclist Association has a word for riders that come off their bikes without leathers on. They call these riders 'squids', because they are often left in a sticky, boneless mess," he added.
"A helmet and leather apparel are two of the best precautions a motorcyclist can take.
"When a rider comes off a bike, a helmet and leather apparel is the only thing between them and the road and can save their life by dramatically reducing the severity of injuries.
"Proper motorcycle leather clothing is designed to protect riders from injury. Riders can find leather jackets with reinforcements inside the material to protect shoulders, elbows and backs from spinal injuries, and some even have reflective piping along the seams to increase visibility at night," said Mr Ashby.