Train announcements are used to inform passengers of the railway timetable of upcoming trains, possible changes such as delays or railway platform changes, and reminders about the non-smoking policies and to keep a safe distance between the tracks and the passengers as well as minding the gap between train and platform. A well-known phrase comes from the London Underground and is the three word phrase: "Mind the gap".^{[citation needed]}

Train station announcements vary in length and volume. The longest announcement can be heard in Wales, reaching a duration of almost 3 minutes, listing all 39 stations in English and Welsh.^[1]

Although train station announcement can seem outdated in addition the platform display and mobile apps, it is necessary for people with vision impairment and for warnings.^{[citation needed]}In Singapore’s MRT, important train announcements are made in the four official languages.^[2]