What does 路面電車 (romen densha) mean? Streetcars in Japan

Legal definition and how it differs from 車両

Article 2(1)(xiii) of the Road Traffic Act (道路交通法) defines 路面電車 as a vehicle operated on rails. The term 車両 (item viii) covers motor vehicles, mopeds (原動機付自転車), light vehicles (軽車両) and trolleybuses (トロリーバス), but not streetcars. The two together are called 車両等.

So whether a question says 車両 or 車両等 decides whether streetcars are included. For example, a yellow arrow signal is only for streetcars; cars may not follow it (Enforcement Order Art. 2).

When you catch up with a streetcar stopped for passengers

You must stop behind it until passengers finish boarding and alighting and those who got off have finished crossing on its left side (Art. 31).

Tracks, overtaking and intersections

Cars may not drive in the track area (軌道敷, kidōshiki) except to cross it when turning, crossing or making a U-turn, or when unavoidable to prevent danger. Vehicles allowed by a 軌道敷内通行可 sign may use it, but must quickly leave or keep enough distance when a streetcar comes from behind (Art. 21).

To overtake a streetcar, pass on its left, unless the tracks run along the left edge of the road (Art. 28(3)). You overtake ordinary vehicles on the right, so tests like to flip this.

At intersections without traffic control, vehicles must not obstruct vehicles coming from the left or streetcars on the crossing road (Art. 36(1)). In other words, a streetcar has priority whether it comes from the right or the left (except priority-road cases).

How it appears on the test, and the traps

The traps are mainly the 1.5 m figure and swapping left and right.

• 'No one boarding, no safety zone, 1.5 m or more clearance, so I passed slowly' → True
• 'At a stop with no safety zone, you may pass slowly with 1 m clearance' → False (1.5 m or more needed)
• 'Uncontrolled intersection of equal width, the streetcar comes from the right, so I (on its left) go first' → False (the streetcar has priority)
• 'On a yellow arrow, cars may also go in the arrow's direction' → False (it is for streetcars)
• 'Overtake a streetcar on its right' → False (normally on its left)

Parking rules and related terms

Stopping and parking are prohibited in the track area, and within 10 m of a streetcar (or bus) stop sign during operating hours (Art. 44).

安全地帯 (anzen chitai, safety zone) is an island or marked area for people boarding streetcars and pedestrians crossing (Art. 2(1)(vi)). Vehicles may not enter it, and must slow down when passing a safety zone with people on it.

Practice questions using this term

• At an uncontrolled intersection where the roads are about the same width, if a streetcar approaches from the right, your car may go first because you are on the left.
• When a stopped streetcar has no one getting on or off, there is no safety zone, and you can keep a gap of at least 1.5 meters from the streetcar, you may proceed at a slow speed.

FAQ

Related guides

• Right of Way in Japan: Intersections, Pedestrians, Emergencies
• Overtaking Rules in Japan: No-Overtaking Zones and Passing
• Japan Parking and Stopping Rules: 5 m, 10 m, 3 m, 1 m
• Japan Traffic Light Rules: Yellow, Flashing, Arrows, Signals
• What does 踏切 (fumikiri) mean? Railroad crossings in Japan

Sources (in Japanese)

• e-Gov法令検索「道路交通法」（第2条・第21条・第28条・第31条・第36条・第44条）
• e-Gov法令検索「道路交通法施行令」（第2条 信号の意味）
• 警察庁「交通の方法に関する教則」（令和6年11月13日現在・全文PDF）