Commercial truck drivers wanting to obtain a Hazardous Materials Endorsement, or hazmat endorsement, have many options to study for the test online, ranging from private companies that charge for services to websites that offer practice tests free of charge. The hazmat test is widely regarded as challenging.
After studying their state's CDL drivers manual regarding the transport of hazardous materials, truckers turn to websites such as that hosted by Trucker Country, which offers a free hazmat endorsement practice test. The site permits test takers to score their tests and to reset the test to retake it as often as possible.
CB39.org also offers free hazmat tests, which, according to staff, are regularly updated to contain questions covering subjects covered on actual hazmat tests. The required score to pass these practice tests is, as with the actual test, 80 percent. Those who provide the free tests say that test takers who pass with at least the minimum score have an excellent chance of passing the real test.
DMV.org also offers practice tests, although for a price. Its hazmat endorsement tests are available individually or as part of endorsement bundles that include study materials broken down by cargo, safe driving and hazardous materials.