|(a) An original applicant for a Texas commercial driver's license
(CDL) must take the signs, rules, and the appropriate Class A or Class B tests
as well as any required and necessary CDL tests. A holder of a valid CDL from
another state need not take the CDL tests if the out-of-state license indicates
those tests were administered in that other state.
(b) Current Texas license holders will be required to take
only required and necessary CDL tests, unless advancing in grade, in which
case the appropriate Class A or Class B tests will be required.
(c) All CDL applicants must take and pass the CDL general knowledge
exam, except those persons who currently hold a CDL from another state.
(d) Class A CDL applicants must take and pass the combination
vehicle test even though there will be no endorsement for combination vehicles.
Those persons currently holding a CDL issued by another state will not be
required to take this test unless they wish to advance in grade.
(e) For applicants who already hold a CDL issued by another
state and for all applicants for renewals of commercial driver's licenses,
the hazardous materials knowledge examination will be required to maintain
(f) Persons who do not take and pass the air brake exam will
be restricted to driving vehicles without air brakes. Applicants holding an
out-of-state CDL will be exempt from this test unless that license indicates
they are restricted to driving vehicles not equipped with air brakes.