A bicycle locker is like a special house for your bike. It's a small room or box that you can keep your bicycle in when you're not using it. Think of it like a bedroom for your bike!
Usually, bicycle lockers can be found in places like train stations, schools, or even workplaces. They are made out of strong materials to keep your bike safe from theft or damage.
To use a bicycle locker, you need to rent it first. This means you pay some money to the person who owns the locker and they give you a key or code to open it. Once you have the key or code, you can put your bike inside the locker and lock it up.
Using a bicycle locker is a great way to keep your bike safe and secure when you can't keep an eye on it yourself. It's also a good idea if you need to leave your bike somewhere overnight or for a long time. Plus, it means you don't have to carry your bike up stairs or on to public transportation!