Practice tests for the CDL hazardous materials exam can be found on many different websites including Trucker Country, The Truckers Report, CB39 and Layover.com. All of these sites offer online tests free of charge, allow the tests to be retaken as often as needed and provide score results immediately.
Many of the online testing sites focus on questions pertaining to scenarios and laws that are only relevant to particular geographic regions or specific states. CDLtrucker.net is unique in that it claims that its practice questions cover the required knowledge applicable for any state. In contrast to the free test pages, CDLtrucker.net charges a fee to take its online practice examinations. The charges are based upon the amount of time the user wants access to the tests.
As of February 2015, the prices are $13 to have access to the practice quizzes for seven days, $16 for 14-day access and $22 for unlimited access to the trial tests for 30 days, according to CDLtrucker.net. The fee must be paid before the assessments can be viewed, and the applicant must enroll in a membership plan. The membership will automatically expire at the end of the number of days in the purchased package.