Think I am with my cousins' views on the subject of driver training. They suggested on numerous forums that there should be a periodic assessment every 5 years or so. However, I think I am with Mad and his wife (who posted similar on PH) - assessment is easier to "sell" than a re-test.

And the "examiner" problem could be addressed by training ADIs to carry out this work . Mad also suggested reduced insurance premium upon production of satisfactory assessement (which could even be graded to give incentives for improvement

) could be a carrot.
We would also include a medical as well in our assessment - but that is subjective bias because of WildyCat's bad experience!
As for Homer's comment about the older driver:
"Either you say they are all competent and let the dangerous ones keep on driving or you assume the worst for all"
That comment applies to
all drivers anyway - regardless of age
But admit - find it strange that there is no compulsory medical or eye test for these people upon reaching more senior years.
But even so -there are a lot of complacent numpties out there who think they are better than they really are - which is why we should have some kind of ongoing training!
And about the comment "Look at people who think they can drive on side lights in a street lit area":
Um?
Highway Code (Most recent edition) - Rule 93:
You MUST
- use headlights at night,
except on restricted roads (those with street lights not more than 185 metres apart and which are generally subject to a speed limit of 30mph) (Interpreted by majority as meaning: sidelights!)
- use headlights when visibility is greatly reduced (as per rule 201)
- ensure all sidelights and rear registration plate lights are lit at night.
Admittedly headlights ensures you are seen - but those people are not necessarily in the wrong according to this

Only pulled people with no lights or blown bulbs in past
We have had numerous discussions on other forums about the clarity of the Highway Code and the way people interpret it!