The best replacement for air brakes is hydraulic brakes.

The best alternatives to air brakes are rated as following:
★★★★★  hydraulic brakes
★  spoilers
★  exhaust brakes

Your alternative for air brakes is not listed? Suggest!
Speaking about air brakes, one probably shouldn't forget about cdl.

Other search terms related to air brakes and their ratings are:
★★★★★ cdl
★★★★ electric brakes
★★ f550
You have in mind a companion for air brakes and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of air brakes in all years. Click on graph for more.
air brakes
hydraulic brakes
spoilers