Delay certificate

A delay certificate is a document issued by a railway company to certify that a scheduled passenger train arrived at a station later than what is stipulated in the company's scheduled timetable. It is provided to passengers affected by the delay, who can then produce it to their superiors at school or work and is considered as a valid reason for reporting late.
This practice is most prevalent in private and public Japanese railway companies, and has been emulated by a number of rail transport operators in other countries.

In Japan

Certificates are issued when delays as little as five minutes occur, and even for instances where the delay is caused by circumstances beyond the railway company's control, such as foul weather or rail suicide. These come in the form of handwritten certificates or printouts given out by conductors or station staff.
Major Japanese railway companies such as JR East, Tokyu Corporation and Tokyo Metro have introduced electronic versions of the delay certificates on their websites, which would remain there for a week or less. Affected passengers who were unable to or did not collect the certificate could alternatively access and download it into their mobile phones or computers, and print them out if necessary.

In other countries

France

Paris' RATP issues delay certificates under the name bulletin de retard, for any delays greater than 15 minutes. They can be used, for example, for late admission at university exams.

Germany

Germany's Deutsche Bahn issues delay certificates known as Bescheinigung über Zugverspätung, "certificate about train delay".

Malaysia

Malaysia's Rapid Rail, which operates the MRT, LRT and monorail in the Klang Valley issues such delay certificates or 'late slip' upon request at their counters if the service delay is due to the operator's fault.

Singapore

Operators of Singapore's Mass Rapid Transit system generally provide travel chits that testifies the commute of the bearer over the affected stretch of the rail network during an event of a delay or disruption. Such travel chits are officially recognised for late admission to all national examinations, such as the Primary School Leaving Examination. Paper chits are distributed by transport operator staff at transit stations during disruptions. Alternatively, electronic travel chits can be obtained from a web service for part of the rail network operated by SMRT Trains, which utilises the geolocation of the user's mobile device to verify that they are affected by the disruption.