accident bicycle helmet cap collision crash hardhat helmet protection safety skullcap strap wear wreck bicycle bike crash helmet cycling cyclist energetic energy environmentally friendly fit fitness movement moving on the move pedalling pedals pushbike safety helmet senior senior cyclist spokes transport transportation travel travelling wheels white car cutter cutting fire fire fighter protecting rescue rescuer rescuing scissors secure stuck trapped active alongside crash-helmet cycle environmentally-friendly exercise helmets on-the-move outdoors outing path pedal-power recreation river riverside safety-helmet sport sporty women adult bicycles bikes boy child park pathway public shade shadows sunlight sunshine track trees confidence learning pushbikes safety-helmets supervised trainer-wheels youngster adults backpacks crash-helmets cyclists youth