Summary of Law(s) and Regulation(s):
Motor carrier testing
Texas Transportation Code § 643.052(6) (2003)
http://tlo2.tlc.state.tx.us/statutes/docs/TN/content/htm/tn.007.00.000643.00.htm#643.052.00
CDL testing
Texas Transportation Code § 522.081 to 522.106
http://tlo2.tlc.state.tx.us/statutes/docs/TN/content/htm/tn.007.00.000522.00.htm#522.081.00