How to Lock Your Bike

Always lock your bike’s frame and wheels with a high-quality, modern U-lock.
Remove all detachable items—lights, bags, quick-release parts—and take them with you.
Lock to a bike rack or firmly affixed (bolts covered in concrete) parking meter or sign pole. These are the most secure places.
See locking diagrams below.

More Tips

Record your bike’s serial number. Get a photo of you with your unlocked bike. Keep the sales receipt. All will help you identify the bike if it is stolen.
Always lock your bike, even if you’re leaving it for only a moment
If your bike has quick-release wheels, always lock through the frame and a wheel. Add a cable, cable lock or second U-lock to secure the second wheel. See diagrams above.
Buy the most expensive lock you can afford. U-locks are strong, and better ones come with theft warranties.
Beware of locking to “sucker poles” that are loosely bolted down and can easily be removed.
Avoid locking to private property. Store your bike inside if space is available. Garages in Chicago are less secure than basements or living spaces.
Lock your bike when keeping it in a garage or on a porch.
Learn about the lock manufacturer’s warranty and product replacement policy.

- The City of Chicago’s page on bike parking and theft prevention
- The SAFE Ambassadors’ locking videos in English or Spanish.
- Active Transportation Alliance videos on preventing bike theft.

File a theft report with the Chicago Police Department by visiting your local district headquarters or by calling 311.
If the police recover your bike, it’s beneficial if you previously registered your bike with the Chicago Police Department. Register your bike now.
After filing a theft report with the Chicago Police Department, file a report on the Chicago Stolen Bike Registry as soon as possible.