Missouri road sign practice tests are available on Driving-tests.org, EPermitTest.com and DriversLicenseTest.net. DMV.org offers a free test and other paid tests. It also offers a road sign manual for prepping for the test.
DriversLicenseTest.net offers several tests for one to pick. Scoring at least 95 percent on the practice tests improve the chances of passing the real exam. The Driver Examination Division provides both written and driving tests in Missouri. The road sign test is part of the driver examination, which helps to gauge driving habits, skills and practices. A new driver visits an examination center to take the exam.