REGISTER YOUR BICYCLE WHEN GETTING ONE!
DE-REGISTER WHEN TRANSFERRING YOUR BICYCLE!

WEAR A HELMET!
DON'T RIDE A BICYCLE AFTER DRINKING!

Getting a Bicycle

You can get a bike either used or new. You can possibly get a hand-me-down from your predecessor or someone else. Or, your workplace may lend you one.

If you are getting a bike (not borrowing one), you need to register it!
Like cars, registration discourages theft by placing a registration sticker tied to a unique serial number on the frame.
If you buy a used bike, make sure the previous owner signs a de-registration form!
Otherwise, trying to double-register a bike will make it appear as you've stolen the bicycle.
This procedure can be done at a bicycle shop or a police station for ¥700. If you want to try at a bicycle shop, call ahead to make sure they accept registration for bikes not sold at their shop.

Transfer of ownership form (PDF)
  • If you're getting a used bike from someone, this serves as additional documentation that you received the bicycle legitimately.
  • Alternatively, you and the previous owner can go together to the place of registration. 

If you're buying a bike, here are some things you should consider:
  • Gears: A single gear will be suffering going uphill, and very low maximum speed overall.
  • Racks and Baskets: Especially if you don't have a car, you will need cargo space. Also, a place to put your bag so your back doesn't get all sweaty.
  • Size: You should get a bike that's comfortable to ride. Too low handlebars, or too small wheels will make you tired faster.
  • Brakes: Disc brakes are much more performant especially in rain, but carry a higher price tag.
  • Electric assist: Expensive but will make going uphill a breeze. Maybe consider a moped?

Bicycle Rules

In Japan, bicycles are considered as road vehicles. Generally, you should ride on the road unless you see a sign permitting bicycle use on the sidewalk.
  • Ride on the left
  • Wait at a crosswalk to make right turns
  • Use your headlight at night
  • Wear a helmet
  • DON'T DRINK AND RIDE A BICYCLE! It's as strict as for cars. You can walk while pushing your bicycle however.
  • Get bicycle insurance. It is required in Kumamoto, and if you get into an accident without it, you're gonna have even worse problems.
You should not park your bicycle on a random spot on the sidewalk. Instead, look for designated parking (駐輪場, chuurinjo).
If you live in an apartment complex, you may have additional rules regarding bicycle parking. Check with your management company or landlord.

Maintaining your bicycle

It pays to keep your bicycle in good condition. You'll have a safer bike, and it'll be easier to ride.
  • Adjust not only your seat height, but your handlebars and brake levers. You will probably need a hex key set for this.
  • Keep your tires well inflated (hard to squeeze). You can bike for longer without getting tired, and it will prolong tire life. 
    • If your tires keep deflating without any apparent signs of puncture, your valves might be leaky.
      Either replace the valve rubber （虫ゴム） or get valves that don't need it. They're available at Daiso for cheap.
  • Lubricate your chain.
  • Check your brakes and gear shifter.
  • Use anti-rust penetrating oil (like WD-40) to loosen up anything that should move but doesn't move well.
  • Use a seat cover, especially during rainy weather
If you have a rear rack, get a bungee cord or rope (available at 100-yen shops and hardware stores). You can tie big boxes to the back of your bike.
Also, you can get supplies to repair a flat tire pretty easily.