Originally Posted by haljackey
I think Wonderland and Oxford is an excellent candidate for a multi-lane roundabout as there is a lot of turning traffic. Waterloo Region has implemented many of these and they excel at improving both the efficiency and safety of these junctions.
Absolutely NOT. Roundabouts are excellent in smaller locations, but Oxford and Wonderland would require a minimum of 3 lanes in the roundabout, and would be a gong-show from day 1 on.
Waterloo doesn't put roundabouts on busy urban arterials as of yet, but rather in rural or highly suburban locations where 1 or 2 lanes suits best.
They're great if everyone knows how to use them, but a roundabout there, at this point, with present drivers education, would be one of the worst decisions the City of London could do. Baby steps with these... Start with 1 lanes, then go up to 2 lanes with low traffic, and then implement them.
Solution is to have dual left turn lanes in certain locations and have them fully protected (ie the WB Fanshawe Park LT onto SB Wonderland)
Plus, expropriation of the adjacent land in the area would be HUGE. roundabouts tend to take up more space than an intersection, especially if we're talking a three laned one.