Why don't trains make *that* sound anymore?

Apr 24, 2026Channel
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Veritasium
Veritasium

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Video Overview

Video Details

Published2 months ago
Duration1:03
Video IDMVFd0qFB9TE
Languageen
CategoryEducation
PrivacyPublic
Made for KidsNo
Video TypeYouTube Short

Performance Metrics

Views4.3M
Likes131.7K
Comments1.6K
Engagement Rate3.10%
Likes per 100 views3.06
Comments per 1K views0.38

Description

If you've been on a modern train you won't have noticed that classic "clickety-clack" sound anymore. This is because train tracks are now one continuous piece of rail without gaps. But one long piece of metal without room to expand when hot is dangerous. Thus, engineers had to come up with an ingenious solution involving... jagged rocks?

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