3 Or 4 Psi Loss On Pre Trip Exam

Topic 10591 | Page 1

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Zachary B.'s Comment
member avatar

When you take the pre trip test, do you test for 3 PS I loss, right. Or is it 4
Robert B. (The Dragon) ye's Comment
member avatar

Zach, start reading. Every question you ask is all on the high road training program or in your states cdl manual.

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.
PPGER's Comment
member avatar

It all depends on whether or not you have your foot on the brake...
I-68 & I-79's Comment
member avatar

3psi in a minute or less for non combination vehicle , 4 psi or less loss on combination vehicle.

Combination Vehicle:

A vehicle with two separate parts - the power unit (tractor) and the trailer. Tractor-trailers are considered combination vehicles.
Susan D. 's Comment
member avatar

Think 2 - 3 - 3 - 4

Straight truck, no brakes applied 2 psi in 1 minute combination, no brakes applied 3 psi in 1 minute

Straight truck, 90 psi brakes applied, 3 psi in 1 minute combination, 90 psi brakes applied, 4 psi in 1 minute

The way our instructor in school broke that down made it easy for me to remember.

no one 's Comment
member avatar

In tennessee it's 3 psi with foot off the brake, and 4 psi with foot on the brake after initial air loss, consult your instructor or state manual
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