The use of the terms shift lane and merge lane can be confusing with the frequent abbreviations SL and ML for sideline and mainline. I changed most occurrences of SL and ML to sideline and mainline in this article to disambiguate, but we might want to come up with different terms for shift lane and merge lane. --Strstrep 16:35, 7 July 2007 (UTC)

IMHO, the SML-style failes on heavy (!) traffic on the ML. The trains are spending to much time to switching the line, blocking other trains on these lines and blocking so the whole hub. And all this to free a line which can be joined by a Sideline. I guess this loadbalancer can be used until medium to medium-heavy traffic, not at heavy traffic. --Progman 16:18, 25 July 2007 (UTC)

1. I find it strange that a switching train blocks anything at all - perhaps bypass design is faulty, because trains switch only if there is a possibility, and if there isnt they maintain same lane, if one train made a wrong choice and got stuck while switching - it will be only one train that is affected and other will use bypass to maintain speed and use same lane. PS game #65 and continuation of that - RBC #03, show that high SML scales lineraly with addition of new lines, and both are under very heavy traffic on quite a few lanes, w/o trains blocking each other --Phazorx 15:55, 9 November 2007 (UTC)