Determinate sentencing is based on the incapacitation and deterrence goals of sentencing. The theory behind determinate sentencing is that criminals will be off the streets for longer periods of time. The next form method is mandatory sentencing. Mandatory sentencing implements the tough-on-crime policies. It removes the sentencing options from judges. Mandatory sentencing is implemented for crimes such as drunk driving, committing a crime with a dangerous weapon, and selling drugs. It requires the offender to serve a fixed amount of time incarcerated before being eligible for release with the approval of the parole board. The last model consists of guidelines sentencing. By 1998, seventeen states and the federal government had adopted sentencing for guidelines. These guidelines shifted sentencing power from state judges to legislators. They consisted of voluntary/advisory guideline sentencing and presumptive guideline sentencing. They both use indeterminate or determinate sentencing structures. However, a presumptive guideline sentencing exists in many states by statute. It specifies an appropriate sentence for each offense to be executed as a baseline for a judge when handing out