Editing Regulation Quick Reference (section)

=== Brakes ===
* '''[[393.40]]''' – Brakes / '''[[625 ILCS 5/12-301]]''' (unplugged red/blue air line, e-brake cable/battery, no in-cab brake controller).
* '''[[625 ILCS 5/12-602.1]]''' – "EXCESSIVE ENGINE BRAKING NOISE PROHIBITED" – must be posted.
* '''[[393.43]]a''' – Tractor protection valve or trailer safety valve (45-20 PSI activation).
* '''[[393.43]]d''' – Emergency breakaway device required.
* '''[[393.45]]b''' – Brake tubing: Secured against chafing, kinking, or contact with exhaust or tires.
* '''[[393.45]]c''' – Spring guards (hard plastic part of air line at connection that stops kinks).
* '''[[393.45]]d''' – Air line connection leaks.
* '''[[393.47]]a''' – Contaminated pads.
* '''[[393.47]]b''' – Mismatched chambers.
* '''[[393.47]]d''' – Cracked pads ('''[[625 ILCS 5/12-301]]''' look under trailer and see cracked pads).
* '''[[393.48]]''' – Unattached brake air hose ('''[[625 ILCS 5/12-301]]''' brake violation: Red = Emergency brake, Blue = Service brake).
* '''[[393.51]]''' – Low air warning (gauge required, '''audible OR visual''').
* '''[[393.55]]c2''' – Trailer ABS not functioning ('''[[625 ILCS 5/12-301]]''').
* '''[[393.55]]e''' – In motion ABS light flashing ('''[[625 ILCS 5/12-301]]''').