Well because the teach you the basics and all the laws and signs you need to aware of before you can start driving. If you are a high school student in Orange County or Polk County you can get professional Driving Education for free. Check out this website for more information.
Death toll of teens in road mishaps is increasing by every year due to teen's reckless driving and inexperience,unaware of safety rules,bad driving attitude,lack of control on speed.Thus it made mandatory for teens to take Driver Education before getting their Learners Permit
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