"This sign is used to inform drivers that the road surface has been intentionally grooved to improve traction and reduce the risk of vehicles slipping during or after rain."
Driving Test is the online platform for US drivers preparing for the DMV or BMV knowledge test. The system is designed to teach you the study material interactively. Plus, our practice questions cover all sections of your state's driver handbook. So, you have a comprehensive review of all the need-to-know information to sit the knowledge test.
