Under 23 U.S.C. § 164, states are required to enact and enforce laws that provide minimum penalties for individuals who are repeat offenders for driving under the influence of alcohol or drugs. The statute mandates that states must revoke the driver's license of an individual who is convicted of a second or subsequent DUI/DWI offense for a period of at least one year. However, states have the discretion to issue restricted driving privileges during this revocation period, provided that the individual uses an ignition interlock device for the duration of the restricted driving period. If a state fails to comply with these requirements, a portion of its federal-aid highway funds may be withheld. This federal law sets a baseline for state laws regarding repeat DUI/DWI offenders and indirectly affects the issuance of restricted licenses by requiring the use of ignition interlock devices as a condition for obtaining such licenses.
23 U.S.C. § 303 encourages states to enact and enforce laws that require the use of safety belts in passenger vehicles and helmets for motorcyclists. While this statute does not directly address restricted licenses, it reflects the federal government's interest in promoting safe driving practices. Compliance with safety belt and helmet laws may be a condition for the issuance of a restricted license following a DUI/DWI arrest. States that demonstrate a high rate of compliance with these safety measures may receive additional federal grant funds, which can influence state policies on driving privileges and the enforcement of DUI/DWI-related laws. The connection between safety measures and restricted licenses lies in the broader context of promoting responsible driving behavior, especially for those with a history of DUI/DWI offenses.