Incorrect traffic sign detection: US 95 highway shield marked as 90 km/h speed limit

Image URL:
https://www.mapillary.com/app/?lat=36.178394940280455&lng=-115.25908389024642&z=18.897941442634934&mapStyle=Mapillary+dark&focus=map&pKey=815194382747852&trafficSign=all&menu=false

Problem:
In this image, a U.S. Route 95 highway shield is incorrectly detected as a 90 km/h maximum speed limit sign.

Expected Behavior:
The detection should either be excluded from the max speed sign category or reclassified as a U.S. highway shield (US 95). This type of misclassification could affect the accuracy of derived map data and signage interpretation in automated systems.

Suggested Fix:
Please consider revising the training data or detection logic to better distinguish between U.S. highway shields and numeric speed limit signs, especially where signs use shield-style designs.

Thanks!

Start by reproducing the reported Mapillary image and tracing the Python traffic-sign detection entry point and associated training-data handling. Determine whether the highway shield is excluded from the maximum-speed category or reclassified, then verify the reported image no longer produces a 90 km/h detection and add regression coverage if the project supports it.