While I agree wholeheartedly with the comment... we need to realize that the reason such BL are designed in the first place is that the law says drivers must check to ensure a way is clear before opening a door into traffic.
Have you ever heard of someone being ticketed for opening a door into traffic?
This is yet another situation in which lax enforcement has lead to problems. So far motorists have carte blanche... speeding, running stop signs, running red lights, talking/texting on cell phones, right turn on red without stopping... the list just goes on and on... all found to be acceptable in one form or another by LEOs and judges.