Agreed mturmon; an open-air LA-freeway-adjacent bike path poses many technical, aesthetic, scale-of-access, cost and possible health issues. I do not think a f

Agreed mturmon; an open-air LA-freeway-adjacent bike path poses many technical, aesthetic, scale-of-access, cost and possible health issues. I do not think a freeway-adjacent bikeway would be popular with cyclists if open-air. LA has a freeway-adjacent bus rapid transit line (the "Sliver Line") which isn't very popular at 12K avg boardings in March 2013, compared to the far more successful rail-route-replacing "Orange Line" at 30K+ avg weekday boardings for the same month. The Orange Line has a parallel bike lane which is popular with cyclists and pedestrians, even into the evening as it's well-lit and well-landscaped. Edit: Reference for LA Metro system boardings: http://www.metro.net/news/ridership-statistics/ http://www.metro.net/news/ridership-statistics/