# Stupid highway signs

**URL:** <https://boards.straightdope.com/t/stupid-highway-signs/853287>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [May 6, 2020, 6:35pm UTC](https://boards.straightdope.com/t/stupid-highway-signs/853287 "2020-05-06T18:35:45Z")\
**Posts on this page:** 1\
**Showing post:** 66

<div class="post-metadata">

**Author:** ![WildaBeast](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wildabeast/32/6_2.png) [@WildaBeast](https://boards.straightdope.com/u/WildaBeast)\
**Post date:** [May 7, 2020, 11:20pm UTC](https://boards.straightdope.com/t/stupid-highway-signs/853287/66 "2020-05-07T23:20:56Z")

</div>

> [@thorny\_locust](#):
>
> There’s a short stretch on the road along the way to my sister’s where the signs say (can’t think of the route numbers right now)
> 
> North Rt XXX  
> South Rt YYY.
> 
> To further confuse matters, on that bit of road you’re actually heading pretty much due west (or east, as the case may be.)

The same thing happens in the San Francisco Bay Area where I-580 joins I-80. 580 West is 80 East, and vice versa. And they’re actually running north-south at that point.

Apparently there’s actually a name for when highways do this – a “[wrong-way concurrency](https://en.wikipedia.org/wiki/Interstate_580_(California))”:

> [@](#):
>
> The segment between the Hoffman Split and the MacArthur Maze is a wrong-way concurrency, meaning I-580 east is signed as I-80 west, and vice versa.

---

_[View the full topic](https://boards.straightdope.com/t/stupid-highway-signs/853287)._