Once that is all together, you’ll want to start practicing for the exam. Usually a social security card, green card, or birth certificate will do just fine. Then you also need to make sure you have a valid driver’s license and proof of citizenship or lawful permanent residency. The certification typically lasts two years unless you have a condition that requires monitoring like high blood pressure. This is to prove that you are physically qualified to drive a commercial vehicle. First of all you’ll need a signed certificate from a licensed medical examiner, as listed on the Federal Motor Carrier Safety Administration (FMCSA) National Registry. Did you do everything you could to prepare for this moment? Well, you won’t even get to the exam if you don’t have the right paperwork. If you fail, you have to waste another entire day going to the DMV and miss out on getting started in your new career. You only have an hour and you have to get 40 of the 50 questions correct or you fail. The General Knowledge test for your Commercial Driver’s License for the state of Florida is about to start.