Laws against reckless driving, or "reckless operation of a motor vehicle," like laws against speeding or drunk driving (DUI or DWI), make such actions a crime and act to deter dangerous driving. Reckless driving differs because it involves a "willful" or "wanton" disregard for the safety of others.
Generally, reckless driving is a misdemeanor crime. This means that constitutional rules apply to prosecutions for reckless driving. The prosecution must prove its case beyond a reasonable doubt. Miranda rules apply, and police officers must inform you of your right to remain silent before you start answering questions.