I don't support the "reasonable exceptions" provision because the cop and the judge get to decide what's reasonable. As this thread about a NYC ticket shows, cops often have a very stupid idea about when cyclists may leave bike lanes. The cop claimed that in order to make a left turn, cyclists must wait until the last second to leave a bike lane and dart across traffic.

If you scroll down to post #81, the cyclist explains that the NYC cop gave him a ticket for not using the bike lane because the cyclist moved to the left lane half a block before he was going to turn left. The cycist ended upp paying the ticket.

Steve, why is it "too radical" to say that cyclists don't have to use bike lanes?