(14 Feb 2016, 3:43 pm)Kuyoyo wrote Also the fact it's a Sunday, reduced PVR requirements on the 306/308 means there's spare Streetlites, so why not use them on other work instead of keeping them in on Sundays (same way that Redcar depot now use their Sapphire Streetlites on 3/81 and 63/22/64a on Sundays as well as Pulsars on 63/22/64a).
Because they are route branded for service 306.