Karen Darke, who won a silver medal in last year's Paralympics, called for the burden to be put on drivers to prove they were not at fault in collisions with bikes.
Legal firm and campaign group Cycle Law Scotland is calling for motorists to be liable by default in civil law claims for injury, damages or loss. It also wants drivers to be wholly liable if the injured person is under the age of 14, over 70 or disabled, with the organisation saying this would help protect the most vulnerable road users.
Ms Darke, who lives in Inverness, was taken to hospital after a vehicle collided with her low-slung hand cycle in the Lake District in June.
She backed the organisation's Road Share campaign yesterday, saying: "I feel there needs to be significant changes to the UK's cycling culture.
"From my own personal experience, cyclists riding in Europe are afforded much more respect and acknowledgement both by drivers and the infrastructure in place. For example, signs urging motor vehicles to be aware of cyclists and wider overtaking lanes.
"Whilst I support the aims of the Road Share campaign to protect the most vulnerable, I also feel strongly about increasing the level of responsibility taken by all road users towards their own safety.
"Whether driver, cyclist or pedestrian, it's key that we all take the appropriate steps to avoid harming others through either wearing seatbelts, hi-visibility clothing, safety helmets or just taking the extra time to look around us."
Ms Darke suffered a spinal cord injury in a rock climbing accident several years ago, which left her paralysed from the chest down. She went on to win a silver medal in the Women's road time trial (H1-2) at last year's Paralympics.