New York CDL Double/Triple Trailers Practice Test

Which statement is correct about visual coupling check for the New York CDL doubles/triples test?

clean paint proves the coupling is safe tractor tire tread proves fifth-wheel lock a dry ungreased fifth wheel is required there should be no space between upper and lower fifth wheel and jaws should close on the kingpin shank

Correct Answer:

there should be no space between upper and lower fifth wheel and jaws should close on the kingpin shank

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