Definitely. Seems like way too many drivers in traffic only see road space in front of another vehicle as "an opportunity to change lanes and go faster" rather than "that vehicle's following distance". I drove a moving truck halfway across the country one time and was amazed at just how often in the cities small cars sped in to fill whatever following distance I created in front of me. And yes, a couple of them nearly got rear-ended as a direct result of their driving, not mine. I can only imagine dealing with the same scenario but with a semi instead. Scary thought!