As a psv driver, you are driving vehicles that are longer than a class 2 lorry. And busses can weigh a lot more than a lorry as well. With a bus you are carrying precious cargo (passengers) so why can you not allow a psv licence holder to be allowed an automatic right to a class 2 licence.
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There is a huge shortage of hgv drivers within the UK. So surely by allowing a psv licence holder the right to a class 2 lorry licence, without the need of a further driving exam would make a lot of sense.