When Trains Are Delayed or Stopped in Japan: Delay Certificates, Detours and What to Do
Updated: 2026-09-17
Quick answer
Hi, I'm Miya, and I help newcomers settle into life in Japan. Trains here are famously punctual, which is exactly why it feels so confusing when your line suddenly stops on an ordinary morning. An accident, a signal problem or someone unwell on board can pause a line for a few minutes or much longer. This guide is about those everyday disruptions, not planned suspensions for storms or missing the last train, which we cover separately.
The short version: check the station boards and your transit app to see whether the line is delayed or fully stopped, and whether there's an estimate for restarting. If it's stopped, ask staff whether transfer-route substitution (furikae yuso) is running, which can let you take another line. Pick up a delay certificate (chien shomeisho) at the station or download one online later, and send your office or school a short message as early as you can. Then decide calmly whether to wait or take a detour.
Reading announcements and station boards
Station displays and announcements use a handful of words again and again, and knowing them makes a big difference. Chien (遅延) means delayed, while unten miawase (運転見合わせ) means services are suspended for now. Daiya no midare (ダイヤの乱れ) means the timetable is disrupted, and unten saikai (運転再開) means services have restarted. You'll also often hear the cause, such as a signal problem (shingo toraburu, 信号トラブル), a sudden illness on board (kyubyo kanja, 急病人) or a person hit by a train (jinshin jiko, 人身事故).
Many boards scroll information in English as well, and some lines give an estimated restart time, called saikai mikomi (再開見込み). Treat that time as a guide rather than a promise, because it can move. Even after a line restarts, trains may run bunched up and crowded for a while. If an announcement is hard to follow, it's completely fine to show the station staff your destination and ask which way is best.
Transfer-route substitution (furikae yuso)
When a line is suspended, the railway company may arrange furikae yuso (振替輸送), which lets eligible passengers travel on a different line or operator to reach their destination without paying again. Stations usually announce it and post a notice listing which alternative routes are included. It generally applies to commuter passes and tickets that already cover the suspended section. Pay-as-you-go travel with a stored-value IC card is often not included, so check the notice or ask staff before you head for another line.
The way you use it varies. Sometimes staff hand out a substitution slip (furikae jokensho, 振替乗車票) at the gate, and sometimes you show your commuter pass or ticket to the staff member at the manned gate of the other line. Don't simply tap your card at an automatic gate on the alternative route, because that may be treated as a normal paid journey. Rules differ between operators and situations, so please follow the railway company's own guidance posted at the station or on its website.
Getting a delay certificate (chien shomeisho)
A delay certificate, or chien shomeisho (遅延証明書), is a simple slip or page confirming that a train on a certain line was late on a certain day. In Japan, many workplaces and schools accept it as the reason you arrived late, and some ask for it. At busy stations after a disruption, staff often place stacks of printed certificates near the gates, or you can ask for one at the staff window. They are usually free, and they're generally issued only when the delay passed a certain number of minutes.
Many railway companies also publish delay certificates on their websites, where you choose the date, line and time period and then save or print the page. These online versions often cover set time bands such as the morning and evening rush, and they may only be available for a limited number of days, so it's a good idea to save a copy the same day. If you took more than one line, you may need a certificate from each operator. Check with your workplace or school about what format they want, as some are happy with a screenshot.
Telling your office or school you'll be late
In Japan, contacting your workplace as soon as you know you'll be late is considered good manners, even when the cause is clearly the train. A short message is enough: which line, that it's stopped or delayed, roughly when you expect to arrive, and that you'll bring a delay certificate. A useful Japanese phrase is 「電車の遅延で遅れます」 (densha no chien de okuremasu), which means I'll be late because of a train delay. Many offices have their own rules about whether to call, email or use a group chat, so it's worth learning yours before it happens.
If you're a student or have a part-time job, the same idea applies, and schools often have a set process for train-related lateness. Try not to leave the message until you arrive, because your manager may be planning around meetings or shifts. Once you're in, hand over the delay certificate or send the online version if they need it. If the disruption is long and you can't reasonably get there, ask whether working from home or coming in later is an option instead of rushing.
Waiting or taking a detour
Whether to wait or go another way depends on the estimated restart time, how far you are going and what other lines are nearby. A transit app on your phone can usually show alternative routes that avoid the stopped section, including other railway lines, subways and buses. Keep in mind that when a major line stops, nearby alternatives quickly get crowded, and bus stops can have long queues. Sometimes waiting a little for the line to restart is actually faster than joining that rush.
If you do take a detour, check whether furikae yuso covers it, and keep any receipts in case your workplace reimburses extra fares. Taxis can be an option for short distances, but they're often in high demand during disruptions, and costs are generally not covered by the railway company. Avoid walking along tracks or entering restricted areas, and follow staff instructions if a train stops between stations. Staying calm, informed and in touch usually gets you to your destination with far less stress.
Keeping your phone connected on the move
Almost every step of handling a disrupted commute happens on your phone. You check live service updates, look up detour routes, download the online delay certificate and send that quick message to your boss, often while standing on a crowded platform. That's much easier with a Japanese phone number and mobile data you can rely on, rather than hunting for station Wi-Fi. Setting one up is simple: you apply online with your residence card, verify with a quick eKYC, and eSIM-capable phones can often connect the same day in about fifteen minutes.
Have a look at our setup guide for eligibility and the step-by-step, and confirm current terms on the page before you apply. Learn a few board words, ask about furikae yuso, save your delay certificate and let your office know early, and a stopped train becomes a manageable part of the day. I'll be right here to help.
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