270-Degree Loop Sign with a 5 in the Center

[California1994]

Can you think of any place where there is a 270-degree loop sign with the number 5 in the center? California only has curve/turn signs with advisory speed numbers on them.

Advice: Use Google Maps Street View.

[Alps]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

[Scott5114]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

[cl94]

You could definitely see 5 on a hairpin sign, but a loop ramp? There's no radius where that would make sense.

[Henry]

Even on a substandard freeway, the lowest speed on a loop ramp would still be 15. Going any lower than that would be asking for trouble.

[Max Rockatansky]

I've never seen a 5 MPH advisory speed on a loop ramp that Caltrans maintains.

[kkt]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

- vandalized sign

[stevashe]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

I suppose it could technically be possible if the loop was very misshapen so one part of it was much sharper than the other, though then it's likely that both parts of the curve would be signed separately.

In any case, the only time I've ever seen a 5 mph curve warning sign is here, so I'd say they are exceedingly rare for any scenario, and that's probably the closest you'll get (at least it's a hairpin!).

[Rothman]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

I suppose it could technically be possible if the loop was very misshapen so one part of it was much sharper than the other, though then it's likely that both parts of the curve would be signed separately.

In any case, the only time I've ever seen a 5 mph curve warning sign is here, so I'd say they are exceedingly rare for any scenario, and that's probably the closest you'll get (at least it's a hairpin!).

DUH: https://goo.gl/maps/Mh83QK7f3deFysGA8

[Max Rockatansky]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

I suppose it could technically be possible if the loop was very misshapen so one part of it was much sharper than the other, though then it's likely that both parts of the curve would be signed separately.

In any case, the only time I've ever seen a 5 mph curve warning sign is here, so I'd say they are exceedingly rare for any scenario, and that's probably the closest you'll get (at least it's a hairpin!).

DUH: https://goo.gl/maps/Mh83QK7f3deFysGA8

I've run down possibly three times that advisory speed.  Amusingly that green sign directing people to walk the stairs all the way on the left fence is usually totally obscured by tourists.

[kkt]

5 would be impossible. The radius would be too small and therefore total distance too short to facilitate making a loop and getting under or over the highway. 15 is about the lowest you can sign a loop for.

Possible ways "5" could still end up on a loop ramp sign:
- math error
- attempt at traffic calming via signage
- vinyl direct applied copy and the other digit peeled off
- someone commissioned a sign from Jake Bear

I suppose it could technically be possible if the loop was very misshapen so one part of it was much sharper than the other, though then it's likely that both parts of the curve would be signed separately.

In any case, the only time I've ever seen a 5 mph curve warning sign is here, so I'd say they are exceedingly rare for any scenario, and that's probably the closest you'll get (at least it's a hairpin!).

DUH: https://goo.gl/maps/Mh83QK7f3deFysGA8

Oh!  Yes!  Duh indeed, I knew that!

I've run down possibly three times that advisory speed.  Amusingly that green sign directing people to walk the stairs all the way on the left fence is usually totally obscured by tourists.

Of course pedestrians are more maneuverable than cars so they can negotiate twisties faster.

[CoreySamson]

I've seen Texas use a 10 mph warning sign on a loop ramp before:
https://goo.gl/maps/cM9cLSc5QWSkyBmD8

Occasionally when I've been through there TxDOT had a VMS enforcing the 10 mph limit. That loop could easily be 20.

[stevashe]

I've seen Texas use a 10 mph warning sign on a loop ramp before:
https://goo.gl/maps/cM9cLSc5QWSkyBmD8

Occasionally when I've been through there TxDOT had a VMS enforcing the 10 mph limit. That loop could easily be 20.

Actually, looks like it's 10 mph due to the complete lack of any superelevation (banking) on the loop. This is supported by the fact that there are signs further on showing tipping trucks along with the 10 mph advisory speed.

This gives me an idea though, I think one could easily design a 5 mph loop ramp and get around needing the curve to be too small by simply banking the ramp the wrong way! 

[California1994]

As a kid and in person, I have seen a loop sign with a number 10 in the center on the farthest south exit into San Francisco International Airport.

EDIT: I also saw a left hairpin symbol with a number 5 underneath it in person on the bus storage area on the bus-only road to the Salesforce Transit Center on May 1, 2022, after my medicare appointment in Oakland, California.

Still, I have NOT seen any loop signs with a number 5 in the center.

[Alps]

I've seen Texas use a 10 mph warning sign on a loop ramp before:
https://goo.gl/maps/cM9cLSc5QWSkyBmD8

Occasionally when I've been through there TxDOT had a VMS enforcing the 10 mph limit. That loop could easily be 20.

Actually, looks like it's 10 mph due to the complete lack of any superelevation (banking) on the loop. This is supported by the fact that there are signs further on showing tipping trucks along with the 10 mph advisory speed.

This gives me an idea though, I think one could easily design a 5 mph loop ramp and get around needing the curve to be too small by simply banking the ramp the wrong way! 

you sound like a highway engineer

[stevashe]

I've seen Texas use a 10 mph warning sign on a loop ramp before:
https://goo.gl/maps/cM9cLSc5QWSkyBmD8

Occasionally when I've been through there TxDOT had a VMS enforcing the 10 mph limit. That loop could easily be 20.

Actually, looks like it's 10 mph due to the complete lack of any superelevation (banking) on the loop. This is supported by the fact that there are signs further on showing tipping trucks along with the 10 mph advisory speed.

This gives me an idea though, I think one could easily design a 5 mph loop ramp and get around needing the curve to be too small by simply banking the ramp the wrong way! 

you sound like a highway engineer

oh well thank you for noticing, I have been doing transportation engineering for about 4 years now since graduating college

[California1994]

Not a loop sign but here's a 5 MPH right turn sign in CA-110.

https://www.google.com/maps/@34.1074017,-118.1866423,3a,75y,217.88h,92.2t/data=!3m7!1e1!3m5!1sKdrPDh8ii7LAKi8n9kAHOA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DKdrPDh8ii7LAKi8n9kAHOA%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D197.73848%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192

If someone finds a loop sign with a 5 in the center, let me know.