I just wanted to add to this thread by suggesting the following for your consideration.
Allow your engine to sit and idle after a run at all times for 2.5 to 3 minutes before shutdown. This alone will assure that your engine will cool down adequately so that you won't have to worry about any overheating or other conditions prior to shutting down the engine.
Do not pull into a rest stop after having cruised at highway speeds and simply shut the engine down so you can get up and take care of the things you need to do.
This procedure goes twice over for folks running diesels with turbos.