What links the following numbers (and many more) in the UK:

150 -> 1101
1262 -> 1261
241 -> 284 (B)
2035 -> [2,Unclassified] -> [460 (C), 2003 (B)]
398 -> 361 -> 3277 (B)
3001 -> 455 (B)
434 -> [4014 (B), 419] -> [4014 (B), 4008 (B)]
4073 -> 470
568 -> 5419 (B)
5041 -> Unclassified
622 -> [6001 (B), 625]
622 (temporary) -> 56
6134 -> 61
715 -> 7084 (B)
7002 -> 801
840 -> 874 (B)
8006 -> 806
927 -> [952 (B), 954 (B)]


I can add some American equivalents if people are struggling here

• They're all rot13(cbfvgvir vagrtref). Aug 3 '20 at 15:32
• rot13(ubj qb v qbjaibgr n pbzzrag?)
– Bass
Aug 3 '20 at 15:34
• Does order matter? Aug 3 '20 at 16:14
• @simonalexander2005 I think it has many answers. It would be better if you would edit this question a bit so that you may get the intended answer. Aug 3 '20 at 17:12

As @TruVortex_07 identified for line one, these are all

The first column represents

And the second column (after the ->) represents

For example

According to Wikipedia, road A1101 was previously known as A150. Going down the list, we see that each road number in the first column is no longer in use. For example, road A1262 is now A1261 (Wikipedia), road A241 is now B284 (Wikipedia), etc.

• i was just going to edit my post but you beat me to it ;) Aug 4 '20 at 13:44
– user69943
Aug 4 '20 at 13:46
• naw, your answer is much more complete and expanded on Aug 4 '20 at 13:46

I might have an answer for the first line:

A150 road -> A1101 Road as A150 turned into part of A1101

As for the full explanation, see Daniel C's answer!

• You're on the right lines - but what do I mean by "->"? Why those in particular? The relationship between the two then applies to the rest as well - they're all examples of the same thing. Aug 4 '20 at 13:09