Reading road signs is exceedingly tricky. It&#x27;s not just the OCR, there&#x27;s plenty of other gotchas. e.g. what if you miss a road sign because you were overtaking a truck when the sign went past?<p>Road signs also have situational contexts. e.g. in the UK there are road signs indicating a max speed for an upcoming sharp bend (or series of bends) in the road. There isn&#x27;t always a matching speed limit sign after the bend because drivers are assumed to work that out for themselves. But will the cars do so? Or will your self-driving car get stuck at the lower speed?