A driving defense course is an online or classroom driving safety class offered by various companies throughout New York State that are approved by the DMV. TLC drivers are required to complete a driving defense course at least once every three years, see here for more information . Not only will the class make you a safer driver, but you will also be eligible for a 10% discount on your insurance premium. The inshur app automatically checks to see if you are eligible for this discount. Drivers with licenses outside NY may need to upload a certificate proof of course completion. You can find online courses here.