Melbourne City council Lord Mayor Robert Doyle was interviewed by Jon Fain on ABC radio this morning, spruiking a renewed campaign to impose 30kmh limits across the CBD, possibly also including other (or all) parts of the municipality. The rationale, according to Doyle, is that collisions cannot be eliminated and therefore the only way to protect cyclists and pedestrians is to reduce vehicle speeds to make the inevitable injuries less severe. Such a move will need to be done in consultation with Vicroads, Doyle stated. (meaning, I think, that Vicroads can make this decision without parliamentary or ministerial assent). Yarra Mayor Alice Clarke also called in to support the move, adding that once Yarra's plan for universal 40kmh limits has been achieved, their strategy plan will then move on to reducing all Yarrra roads to 30kmh. Asked why Yarra doesn't just ban motor vehicles, Clarke then stated that this is also part of the strategy plan, longer term. (Clarke rides a motorised bicycle, which would not be included.) Edit: Obviously a 30kmh limit will apply to motorcycles (relevance).