In general provisions, further providing for definitions; in licensing of drivers, further providing for drivers required to be licensed, providing for undocumented immigrant driver's license invalid and further providing for persons exempt from licensing and for carrying and exhibiting driver's license on demand; in miscellaneous provisions, further providing for the offense of homicide by vehicle, for the offense of aggravated assault by vehicle, for the offense of homicide by vehicle while driving under influence and for the offense of aggravated assault by vehicle while driving under influence; in enforcement, further providing for impoundment for nonpayment of fines and vehicles or combinations with a gross vehicle weight rating of 17,000 pounds or less; in penalties and disposition of fines, further providing for subsequent convictions of certain offenses; and imposing penalties.