Have you traveled an interstate near you lately and noticed 18-wheelers parked on the shoulder? It happens so frequently on Interstate 10 between San Antonio and Beaumont that it isn’t uncommon to see as many as seven or eight big rigs pulled over on the shoulder. Is it legal for 18-wheelers, commercial trucks, and the like to park there? Is the shoulder lane available for parking to anyone at all? The answers to these questions might surprise you.