If you saw last week’s episode of On the Road, you know the importance of keeping your tire inflation correct—not too much, and not too little. If you didn’t see that episode, you can watch it here.

Today’s tire technology offers several methods of keeping your tires at the proper level of inflation. There are two types of digital tire monitoring systems: tire pressure monitoring systems, or TPMS, and automatic tire inflation systems, or ATIS. The difference between them is that TPMS monitor tire inflation, alerting drivers and fleets if it becomes too low or too high, while ATIS take it a step further and inflate the tire automatically whenever more air is required.

Whichever you choose, it doesn’t mean you can neglect periodic manual inspections. And the TPMS and ATIS systems will need periodic maintenance themselves, just like most equipment.