00:00The London Underground map is recognised around the world, and its colourful design has become
00:05almost as famous as the railway itself. Every line has its own distinctive colour, but those
00:11shades were chosen for practical reasons rather than for simple decoration or style alone.
00:17Before coloured maps became common, underground routes were much harder to follow.
00:22As the network expanded, passengers needed a quicker way to understand complicated journeys,
00:27giving every line a different colour made routes easier to recognise instantly, and reduced
00:33confusion while travelling across London. The breakthrough came during the 1930s when
00:39engineering draftsman Harry Beck redesigned the underground map. Instead of showing exact
00:44geography focused on how stations connected, the simplified layout combined with bold colours
00:50created a clearer guide that has influenced transport maps worldwide ever since. Some colours were
00:56selected because they stood out clearly from neighbouring lines, while others reflected existing
01:01branding or practical printing limitations. As new routes opened over the decades, additional colours
01:07were carefully chosen to remain easy for passengers to distinguish at a glance.
01:12The colours are now an essential part of London's identity, appearing on signs, souvenirs and digital
01:19journey planners. They help millions navigate the capital every year, and remain a lasting reminder
01:24that thoughtful design can make even the most complicated network feel surprisingly simple.
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