How to use the online timer
Start the seventy-second countdown, then leave the screen and concentrate on making your connection between platforms at Clapham Junction. The interval is short enough to cover a brisk change when the route is clear, while giving you a fixed point for checking whether the train, crowd or platform information has slowed you down.
During the platform change, keep the timer’s browser tab open even if you switch to a journey app or lock the phone. Closing the tab or browser may end the countdown, so there may be no alert when you reach the next platform. Leaving it running also means the remaining time is available if you glance at the screen on the way.
Among announcements, trains and other passengers, the finishing sound may be difficult to hear from a pocket or bag. A comfortably audible volume and vibration make the end easier to notice without watching the display. If the concourse is especially noisy, keeping the phone in your hand can make the vibration clearer while you continue towards the platform.
Common questions
What could make the allotted time too short for changing platforms at Clapham Junction?
Crowded stairs, a late platform announcement or a route involving a longer passage can use up the interval. If the platform is unfamiliar, treat the countdown as a reference rather than an assurance that the connection can be completed.
What should I do if I reach the platform before the countdown finishes?
Stop it once you have confirmed the platform and train information. If the change takes longer, continue safely and check the departure boards rather than rushing because the alert has sounded.
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