If you have a local mechanic that you use regularly you could get the DOT inspection done for free. When my van is in for a brake job, I will have them do a DOT inspection. Even if I have 3 or 4 months left on the current one. As long as the van is going up on the lift, might as well DOT it. I have the form all filled out with the stuff that doesn't apply properly marked and don't get charged. Just make sure the work order and receipt show a DOT inspection.