Visibility and rider equipment
Choose a helmet that fits and meets the applicable requirements for your market and use. Select front and rear lights and reflectors for the route and conditions, and confirm local bicycle-equipment laws rather than assuming one setup is legal everywhere.
Security for the parking situation
Match the lock type and locking method to where and how long the bicycle will be left. Confirm that the lock can secure the frame and relevant wheels to an appropriate fixed object without interfering with riding.
A route-specific repair plan
Carry inflation and flat-repair equipment compatible with the tire, tube or tubeless system, valve, wheel fasteners, and rider's skills. A phone, payment method, or transit backup can be part of the plan when roadside repair is not practical.
Weather, hydration, and cargo
Mudguards, bottles and cages, racks, panniers, baskets, and kickstands must fit the bicycle's approved mounting points and clear wheels, brakes, cables, batteries, and moving parts. Recheck fasteners and load limits after installation.