Introduction
That narrow road near your home. There is no speed sign on it, and nobody has ever said anything about how fast you drive there. As of today, September 1, 2026, that road has a speed limit of 30 km/h.
No new signs are going up. The road looks exactly the same as it did yesterday. What changed is the law itself: the old assumption that “a road with no sign means up to 60 km/h” is gone. Drive it at 50 km/h without knowing, and that is a speeding offence.
This article covers how to tell which roads are affected, which roads are not, how motorcycles and mopeds are treated, and what happens if you are caught.
TL;DR
- From September 1, 2026, the default limit on ordinary roads without a centre line drops from 60 km/h to 30 km/h
- It covers roughly 70% of Japan’s 1.22 million km of ordinary roads, including most residential streets, school routes, and shopping-street lanes
- The test is not road width. It is whether the road has a centre line
- Where a speed sign exists, the sign wins. A 40 km/h sign still means 40 km/h
- Motorcycles are covered. *Mopeds (gentsuki) were already limited to 30 km/h, so nothing changes for them*
Disclaimer: This article is based on National Police Agency information as of September 1, 2026. For how a specific road is treated, check the guidance from your prefectural police.
What Changed
On September 1, 2026, an amendment to the Road Traffic Act Enforcement Order took effect, lowering the statutory speed limit for vehicles on local streets (seikatsu dōro).
| Until August 31 | From September 1 | |
|---|---|---|
| Ordinary road with no centre line | 60 km/h | 30 km/h |
| Ordinary road with a centre line or lane markings | 60 km/h | 60 km/h (unchanged) |
| Road with a posted speed sign | Posted speed | Posted speed (unchanged) |
The National Police Agency describes a local street as “a road without a centre line or similar markings, used mainly for the daily life of local residents.” The change is grounded in Article 11 of the Road Traffic Act Enforcement Order and Article 5-6-3 of the Enforcement Regulations.
(Source: National Police Agency, "The statutory speed limit for vehicles on local streets is being lowered")
The change is expected to cover roughly 70% of the 1.22 million kilometres of ordinary road in Japan.
(Source: Response, "Narrow local streets go to 30 km/h from September 1")
The Test Is the Centre Line
“It’s a residential area, so 30” and “the road is narrow, so 30” are both wrong. What you look for is the centre line, the white or yellow line painted down the middle of the road.
Work through it in this order.
- Is there a speed sign or road marking? If yes, that number is the limit.
- If not, is there a centre line or are there lane markings? If yes, 60 km/h.
- Is oncoming traffic separated by a median strip or guardrail? If yes, 60 km/h.
- None of the above, on an ordinary road? 30 km/h.
Expressway main lanes and motor-vehicle-only roads are outside the scope of this change.
(Source: National Police Agency, "The statutory speed limit for vehicles on local streets is being lowered")
As a rule, centre lines are painted on roads 5.5 metres wide or more. That means in practice most of the affected roads are under 5.5 metres, but that is a consequence, not the rule. The rule is the line.
Some local streets carry a 40 km/h sign. “All local streets are 30” is not true. Assuming 30 where a sign says otherwise, and ignoring a sign to drive 40, are both risky.
Motorcycles Are Covered, Mopeds Are Not Affected
The limit that dropped is the one for “motor vehicles,” and that category includes motorcycles as well as cars. If you commute by motorcycle, this applies to you.
Mopeds (gentsuki) were already capped at 30 km/h, so this amendment changes nothing for them. If you ride a moped for delivery work, keep riding the way you always have.
(Source: Japan Automobile Manufacturers Association, MOTO INFO)
Why the Limit Was Lowered
The reason is that pedestrians and cyclists are being hurt on exactly these roads.
On local streets, a high share of the people killed or injured are on foot or on a bicycle. And when a car hits a pedestrian, the share of collisions that end in death climbs sharply as speed rises, with the increase becoming pronounced above 30 km/h. The 30 km/h figure was chosen to sit at that threshold.
(Source: Government of Japan Public Relations Online, "Local streets go to a 30 km/h statutory limit")
Officials also point out that fatal pedestrian accidents cluster within 500 metres of the victim’s own home. The dangerous road is not the distant arterial. It is the one you and your family walk every day.
(Source: Saitama Prefecture, Sainokuni Newsletter, August 2026)
30 km/h feels slow. But over one kilometre of narrow residential road, the difference against 40 km/h is under a minute. Rushing barely changes your arrival time, which makes the new limit easier to live with.
What Happens If You Are Caught
Speeding is handled the same way it always has been on ordinary roads. For a standard car, the fixed penalties are:
| Amount over the limit | Fixed penalty (standard car) | Demerit points |
|---|---|---|
| Under 15 km/h | ¥9,000 | 1 |
| 15 to under 20 km/h | ¥12,000 | 1 |
| 20 to under 25 km/h | ¥15,000 | 2 |
| 25 to under 30 km/h | ¥18,000 | 3 |
(Source: Tokyo Metropolitan Police Department, table of offences and fixed penalties)
The line to watch is 30 km/h over. Past that point you cannot settle with a fixed penalty. You receive a “red ticket” and the case goes into criminal procedure.
(Source: JAF, "Local streets move to a 30 km/h limit from September")
There is one point worth knowing if you plan to stay in Japan long term. Now that the limit is 30 km/h, driving one of these roads at the 60 km/h you were used to puts you a full 30 km/h over. The same driving carries a heavier consequence starting today.
Applications for permanent residence are assessed partly on “good conduct,” meaning whether the applicant obeys the law in daily life.
(Source: Immigration Services Agency, Guidelines on Permission for Permanent Residence)
A single traffic offence does not automatically end a permanent residence application. But a red ticket is a different category from a fine you simply pay. Treat it as one more reason to watch your speed.
What to Do Today
- Picture the roads around your home. No centre line means 30 km/h as of today
- Get in the habit of checking for signs. Where one exists, it overrides the default
- Do not trust your car navigation or map app. Posted speed data is not always updated in time
- Rental cars and car sharing are covered too. The limit follows the road, not the owner of the car
- If you are about to get a Japanese licence or convert the one you already hold, review the new limit alongside the conversion process
- If driving here makes you uneasy, getting around by train and bus is worth considering
FAQ
Q. Is every road without a sign now 30 km/h?
A. On an ordinary road with no centre line, no lane markings and no median, yes. A road with a centre line stays at 60 km/h even without a sign.
Q. Can I just use 5.5 metres of width as my rule?
A. It is a rough guide, not the rule. The test is the centre line, not the width. A narrow road with a centre line is still 60 km/h.
Q. Will new signs be installed?
A. This change is to the statutory limit itself, so it applies whether or not a sign is posted. The absence of a sign is not a reason to assume the limit is higher.
Q. Does this apply to motorcycles and mopeds?
A. Motorcycles are covered and drop from 60 km/h to 30 km/h. Mopeds were already at 30 km/h, so nothing changes.
Q. Does it apply if I drive on an overseas licence?
A. Yes. Japanese traffic rules apply to anyone driving on Japanese roads, including holders of an international driving permit.
Q. Can a speeding ticket affect my residence status?
A. An offence settled by paying a fixed penalty does not directly affect your status. Permanent residence screening does look at conduct, though, so it is worth not repeating them.
Key Takeaways
- ✅ From September 1, ordinary roads without a centre line are 30 km/h. That is roughly 70% of Japan’s ordinary roads
- ✅ Judge by the centre line, not the width. A posted sign always overrides the default
- ✅ Motorcycles are covered. Mopeds are unchanged
- ✅ Over 30 km/h above the limit means a red ticket and criminal procedure. Driving on old habits makes that easier to hit than it used to be
- ✅ Today, run through the roads you use for commuting and shopping and note which ones have no centre line
The rule changed today, but the roads look exactly as they did yesterday. Trace your commute and your route to the supermarket in your head, and decide now to ease off on any road without a centre line. If you are unsure about a particular road, checking for the line the next time you drive it is all it takes.
