I do NOT want to re-litigate the Sunnybrook / Leslie at-grade intersection discussion.. But I'm curious about a possible solution to provide for a full "isolated" segment between the future Renforth and Don Valley stations.
Could they not just ban SB and EB left turns at the intersection and remove any allowable movements through the intersection?
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I know there are a high volume of left turning vehicles EB at Eglinton... but if this was really a serious concern, I am confident that you would see left-turning traffic over time re-distribute to Don Mills and Bayview, both of which have the LRT stations underground. There really isn't a whole happening on Leslie between Eglinton and Lawrence other than some industrial and the condos right on the corner. Without any possible conflicts, the LRT could run at a much faster speed.
In general, this forum has been very focused on LRT infrastructure modifications, I wonder if new roadway infrastructure could resolve this issue at a lower cost and much less disruption to the LRT service. A possible fix could be conversion of Overland Dr. to a full signalized connection between Leslie St. and Barber Greene Rd.