If you mean :
He also claims he [always]
knows how to determine if he's in a 30 limit but recent evidence suggests otherwise
I never said that, quite the opposite in fact.
I said it is difficult to always know what the limit is and it is getting more difficult all the time. The evidence backs me up :
There were almost 2.7 million motoring offences, excluding data from the Metropolitan Police Service (MPS), recorded in 2023, an increase of 11% compared with the previous year (2.4 million), and the highest recorded since comparable records began in 2011.
More than four-fifths (86%) of recorded motoring offences were for speeding (2.3 million), up 10% on the previous year (2.1 million) and the highest recorded since 2011.
Between 2011 and 2023, the number of speed limit offences increased at a faster rate than the amount of road traffic in Great Britain.
I wonder what that graph would look like in a few years time if all speed cameras were made to display the speed limit right next to the speed camera, preferably painted on the road just in front of it.
Actually I would put £1000 on it that the numbers would start dropping, possibly hugely.
Now, if speed cameras really are there "not to catch drivers out but slow then down in a high accident area" then there is no argument for NOT having said speed limit signs at camera sites.