1. No excuse... Period. Designated bicycle lanes, are for bicycle transit use ONLY, (does not include automobiles and delivery vehicles that park for a short period of time for delivery in the absence of appropriate adjacent parking to a business). Just because some people are starting to take certain liberties based on their own preference or opinion, does not make the practice safe or legal.

2. If you see a cyclist transiting against the normal flow of traffic, such occurances should be reported as would be the case with any other traffice violation or action that could pose a safety risk to himself, other cyclists, or the traffic adjacent to that lane. Remember, cyclists are REQUIRED to transit in a manner consistent with the flow of normal traffic, (in other words, are supposed to be part of the normal flow of traffic), and not an entity apart. Some states are seriously starting to consider requiring that any ciclyst transiting on public roads to be required to have a current form of identification. If you get stopped by a law enforcement officer in those states, because you are commiting an infraction, you don't get talked to, and later let go home. You are given a citation, and if warranted, you will be arrested and taken into custody.