<p>The first time I had to deal with left exits, I got on shortly before I had to get off and I wasn’t used to so many lanes of traffic. We do have a few left-exits in MA/NH now so it’s less of an issue. Sometimes you have to slow down on the highway for left exits if they get backed up or slow which can present a hazard to high-speed drivers. I guess that left-exits are easier to design and build in some environments.</p>