Dear Urban Diplomat: Can I stop rude drivers from budging at a lane-closure queue?

Dear Urban Diplomat, The left lane is closed about halfway along the off-ramp from the Bayview extension to River Street. Yet every morning, despite the lane closure signs, one in 10 drivers speeds past the queue and squeezes in at the bottleneck, making everyone else’s commute even more excruciating. One morning, I’d had enough, so I positioned my car over the dotted line, blocking the left lane. Some guy in a black BMW drove up behind me and laid on the horn. I held my ground. I think everyone else appreciated it—in fact, another driver mimicked my move. I was right, right? —Vigilante in a Tercel, Davisville