The evening commute in Lafayette Parish was smoother on Tuesday, a stark contrast to the chaos 24 hours earlier. Three separate crashes involving 18-wheelers had previously brought traffic to a standstill. Authorities reported that a car failed to yield and collided with an 18-wheeler along I-10 in Lafayette. The impact turned the big rig on its side, forcing police to shut down parts of the interstate and causing significant delays. In Scott, two tanker trucks loaded with chemicals overturned on Heidi Circle, requiring police to close the roadway while hazmat crews addressed the chemical spill…