California cdl Combination - Test 2
Number of questions: 20
Passing score: 85%
Acceptable number of errors: 3
All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the California Commercial Driver Handbook. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 17 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
To DMV Handbooks10. In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:
A
√
20 and 45 psi.
B
×
75 and 105 psi.
C
×
50 and 65 psi.