Service 4 between Morriston Hospital in the north and Swansea University in the south is operated by articulated ftr buses and known as 'Metro'. In the evenings and on Sundays conventional buses are used.
The Metro stops (stations) all have high kerbs which are good for passengers and a hazard for parked cars. However the buses don't always bother drawing forward to the stops.
The two-way bus lane through the city centre is shared with conventional buses, taxis, hire cars and white vans. The interior layout is different, both doors are used for boarding and alighting and the conductors were unfailingly polite and helpful. We were surprised by the lack of real time information both at the stops and on board the buses.