What is the difference between a hit-and-run charge and a charge of possessing and using methamphetamine?

In the present case, appellant's misdemeanor drug charges and his felony hit-and-run charge are not offenses of the same class. The drug charges consisting of possessing and using methamphetamine are Health and Safety Code violations directed at deterring and punishing the use and possession of controlled substances. In contrast, the hit-and-run charge is a Vehicle Code violation meant to criminalize and deter the failure to stop and render aid when it involves an accident that produces permanent or serious injury. (See, e.g., People v. Braz (1998) 65 Cal.App.4th 425, 431-432.)