(13 Jan 2016, 8:56 am)Adrian wrote My understanding is that the 20 day thing is if you're registering or stepping in for a service, in what would be defined an emergency registration. It's not there for if you can't be bothered to get your house in order.

That's all that I could find, too. It only concerns destination displays, rather than non-DDA buses in general:

"If the vehicle is providing a temporary service (e.g. rail replacement) or is an emergency replacement vehicle on the route in question it may not be possible to display the route and destination in all the usual places. In such cases a temporary sign must be displayed and must show the correct route number (if any) and the correct destination displayed on the front or nearside of the vehicle as close as practicable to the front entrance. The route and destination need not be illuminated at night. These relaxations apply only for the first 21 days of operation of such services."

Source: https://www.gov.uk/government/uploads/sy...le5990.pdf

The PSVAR guidance states "the Regulations apply to all buses and coaches operating to a published timetable." Nightingale Coaches are currently running a temporary service (28C) whilst Go North East's 28 service is diverted. The published timetable is available here; however, I note that the vehicle is operating with no destinations at present (but does have some vinyls with the route number at the front and back of the bus). I wonder if Nightingale Coaches realise that they have just over a week to arrange for destination displays to be fitted on what is potentially a leased/hired vehicle?

Source: https://www.whatdotheyknow.com/request/1...idance.pdf