Highway 401 Widening - Highway 8 to Townline Road

[ijmorlan]

Question about lane numbering: I think everybody in this thread is using Lane 1 to mean the rightmost lane. I always assumed lanes should number from the left outward, mostly because lanes most commonly are added and removed on the right. So in the typical case, an add or remove just adds or removes a lane, without changing the numbering of the other lanes. So over the course of a typical highway, “Lane 1” would be a continuous lane, which may some places be the only lane, other places the leftmost of 2, and in a few places the leftmost of 3, depending on the segment of highway in question. Of course there is more complexity in some of the large freeways.

Does anybody know what terminology road designers use?