(12 Dec 2021, 5:14 pm)ne14ne1 wrote Surely the ‘route diversion’ wording/symbol is displayed from the very beginning of the route so that all passengers boarding can ask the driver if they are unaware of the diverted route.

You could have a bus say leave Consett and by the time they get to the Redheugh Bridge there is an accident on it and it needs to be diverted say across the Tyne Bridge and miss out Central Station, but when the bus left Consett, nothing was wrong.