Rest stop parking can be confusing for RVers

We recently stopped at an Indiana welcome center and I was somewhat confused about where to park. I have a 40 foot motorhome with a towed vehicle which adds another 25 feet. Here is the sign that greeted me as we pulled into the rest area. Because my rig is almost as long as most commercial trucks, I opted for the truck parking area. Had I stayed to the left I would have seen the RV parking area and driven past it to the truck parking area because the RV spaces were too short to accommodate our size. I know if I follow the trucks I'll be able to park and maneuver so as a general rule I always go with the trucks to be sure. By the way, welcome centers are great places to pick up free state maps and information on attractions. Resting up for the next road trip - Jim Twamley, Professor of RVing