(22 Mar 2022, 8:39 am)Unber43 wrote Yeah, but 6942 is a Euro 5, a lot of the buses which are older and are still using including 3943 are Euro 4.
In this context that's not really relevant.
6942 is a dual-door bus which, by and large, is unsuitable for normal service work. It was never supposed to be allocated to the 56, and the fact that it regularly was is why it was quickly replaced. The school service it was allocated to is now allocated a coach, and the coach can be used on private hire and rail replacement work on a weekend.