(Continous welded rail-CWR-restrained thermal expansion, Clickity-Clack when going over joints-Rock and Roll) Why Railroads Don't Need Expansion Joints [15:52 | Dec 05 2023 | Practical Engineering]
![](https://kbin.life/media/cache/resolve/entry_thumb/22/4a/224abb2da0d8165237dcca325703caab08c3f95bcb1e727041482674b9ef8a56.jpg)
There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.