They have three rows of cars right behind each other, and they make you leave your key in the ignition in case they have to move your car to let someone else out. These devices are supposed to better control traffic flow on our major interstate highways. But they could also cause enormous backups on our feeder roads. Maryland officials said they won't make a decision on where to test them until fall, after further study. They are counterproductive.
Most drivers are fully capable of eyeballing oncoming traffic.
From a standstill at a traffic light, it takes much longer to accelerate. I have seen instances in Virginia where the traffic light not only slowed ramp traffic, it considerably slowed interstate traffic as it adjusted to a very slow car coming from the ramp. These lights are far more dangerous than the lack of them. We received dozens of right answers for this one. Dr. Gridlock's assistant, Lori Fischer, contributed to this column.