Utah cdl Combination - Test 1
Number of questions: 30
Passing score: 83%
Acceptable number of errors: 5
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 Commercial Driver License Manual. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 30 multiple-choice questions, and applicants will need to correctly answer a minimum of 24 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
To DMV Handbooks2. A loss of air pressure in the emergency line will cause:
The service brakes to activate.
The tractor protection valve to close.
The rear trailer to detach from the combination.
The suspension springs to extend.