Breakdowns can happen anytime anywhere. As long as you are on a highway or close to a city then this may not be a big deal. With a little bit of an effort, you can find a service. However, if you are far from the cities or towns then you are in big trouble. Therefore it is best to search and note down contacts of mechanics on your given route and keep it in the glove compartment for easier access.
If you want to ensure that you get reliable, efficient and specialist services then ensure that you have contacts of reputable mobile truck repair. You can easily run a web search for “mobile truck repair near me“ or diesel repair in Indianapolis or the parameters covering your route and get contacts of such companies. It is best to look for companies that are available 24 hours a day, have a large network, provide on-site repairs, and also carry stock of required spares, like Truckup.