The correct answer to question #184 is "C". Watch this video multiple times and effortlessly acquire all the knowledge you need to pass with flying colors. Watch now and ace your test. Good luck! #cdl #permittest #studyguide #airbrake #airbrakes #airbraketest #doubles #triples #endorsement #generalknowledge #combination #vehicles #hazmat #tanker #truck #trucks #truckdriver #trucking #trucker