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 active bright safety jacket cheerful cycle pedal power sporty visibility alongside crash-helmet environmentally-friendly exercise helmets on-the-move outdoors outing path pedal-power recreation river riverside safety-helmet sport women adults backpacks bicycles bikes crash-helmets cyclists pathway pushbikes safety-helmets shade shadows sunlight sunshine track trees youth adult boy child park public confidence learning supervised trainer-wheels youngster