Central tire inflation system

This is important on work sites and in agricultural fields; by giving the driver direct control over the air pressure in each tire, maneuverability is greatly improved.

In this case, the system controls inflation automatically based on the selected pressure the driver has set.

[1] CTIS also extends truck, tire, and drive train life, by significantly reducing vibration and shock loading.

There have been attempts at employing central tire inflation systems on aircraft landing wheels (notably on the Soviet Antonov An-22 military transport) to improve their preparedness for unpaved runways.

The Czech Tatra T813's central inflation and deflation system was designed to maintain pressure even after multiple bullet punctures.

Tractor-drawn trailer with CTIS
The Tatra T813 prototype had CTIS as early as 1960; it later became standard for all Tatra military trucks.