# Traffic Sign In Trenton ( the AI's are cheating ) **URL:** \ **Category:** Web and notifications\ **Created:** [July 29, 2017, 3:56am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094 "2017-07-29T03:56:26Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![allen](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/allen/32/137_2.png) [@allen](https://forum.mapillary.com/u/allen)\ **Post date:** [July 29, 2017, 3:56am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094/1 "2017-07-29T03:56:26Z")
I don’t really believe that those AI guys are cheating. But this incorrect traffic sign shows that they’re pulling some traffic sign data in from someplace. There is no way: a) That the AI reads a car tire as a 31MPH speed limit b) That the AI would think that any US city would have a 31 MPH speed limit. I caught this since for some reason on a recent drive through Trenton, Tennessee I didn’t drive past a speed limit sign. The town is known for it’s unique 31MPH speed limit. Usually locals have a 25 or 30 MPH speed limit. > **[Mapillary](https://www.mapillary.com/app/?lat=35.982561111111124&lng=-88.9416861111111&z=16.035943877833105&pKey=367202488059143&focus=photo&signs=true&x=0.7735286256640099&y=0.7988832002182217&zoom=1.7751479289940828)** > > Mapillary is the street-level imagery platform that scales and automates mapping using collaboration, cameras, and computer vision. ![](https://us1.discourse-cdn.com/flex015/uploads/mapillary/original/1X/70924ca76112097a01de363979fff54061245c5e.png) ---
**Author:** ![allen](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/allen/32/137_2.png) [@allen](https://forum.mapillary.com/u/allen)\ **Post date:** [July 29, 2017, 4:00am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094/2 "2017-07-29T04:00:27Z")
Ooooh, the plot thickens. Here they flag it as 30MPH when it’s 31MPH! Whatever is going on exactly, it makes a lot of sense to do… almost. Except for here in the tea pot capital, Trenton, TN, USA. 😄 > **[Mapillary](https://www.mapillary.com/app/?lat=35.979563888888876&lng=-88.94172500000002&z=17.961678773535553&pKey=932964034171546&focus=photo&signs=true&x=0.4653656776049297&y=0.8220778310547485&zoom=2.162607941767127)** > > Mapillary is the street-level imagery platform that scales and automates mapping using collaboration, cameras, and computer vision. ![](https://us1.discourse-cdn.com/flex015/uploads/mapillary/original/1X/8c0cea48b7ec5df23cd05359f6c767b7733db246.png) ---
**Author:** ![utack](https://avatars.discourse-cdn.com/v4/letter/u/b9bd4f/32.png) [@utack](https://forum.mapillary.com/u/utack)\ **Post date:** [July 30, 2017, 1:16am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094/3 "2017-07-30T01:16:52Z")
Unlikely, AI can see weird stuff in images we don’t expect it to see ---
**Author:** ![B4sti4n](https://avatars.discourse-cdn.com/v4/letter/b/ebca7d/32.png) [@B4sti4n](https://forum.mapillary.com/u/B4sti4n)\ **Post date:** [July 30, 2017, 7:05am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094/4 "2017-07-30T07:05:50Z")
What you see there is not a speed limit sign. It is a height limit sign. See here: [File:Zeichen 265 - Verbot für Fahrzeuge, deren tatsächliche Höhe einschließlich Ladung eine bestimmte Grenze überschreitet (600x600); StVO 1992.svg - Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Zeichen_265.svg) ---
**Author:** ![allen](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/allen/32/137_2.png) [@allen](https://forum.mapillary.com/u/allen)\ **Post date:** [August 4, 2017, 11:11am UTC](https://forum.mapillary.com/t/traffic-sign-in-trenton-the-ais-are-cheating/1094/5 "2017-08-04T11:11:07Z")
Good catch. (((((((((((((((((((((((((((((((((