Nick Stockton, writing for Quartz:
The problem, says architect Tim Stonor of Space Syntax, Ltd., who helped design the London plan, is that segregating cyclists just perpetuates the “us vs. them” mentality that drives the current uneasy dynamic between bikes and cars.
That’s like saying we shouldn’t grade separate trains from roads, that every train track should cross every road so we don’t perpetuate the “us vs. them” mentality of train passengers and cars. It’s a pretty weak argument.