If the sign is too far away, or if speed is too high.
If signs or speed reminders form part of the road surface.
If visibility is low (i.e. in rain, snow, haze, or at night, etc.).
If bright light affects the camera or if lighting intensity changes suddenly.
If the glass on the windscreen around the camera is dirty, broken, or something is covering it .
If you drive too close to the vehicle in front, obscuring the field of view of the camera.
If speed is too low.
Notice
The default unit for speed limit signs detected by the system will be km/h.
If multiple speed limits are displayed on one sign, the system displays the highest speed limit
value.
If multiple speed limit signs are juxtaposed, the maximum speed limit is displayed by the system.
Please observe the actual speed limit of your current lane.
Speed signs may not be recognized while the vehicle is turning.
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