Patrolling
A highway patrol is either a police unit created primarily for the purpose of overseeing and enforcing traffic safety compliance on roads and highways, or a detail within an existing local or regional police agency that is primarily concerned with such duties.
Duties of highway patrols or traffic police may include the following:
• Accident investigation: Gathering evidence to determine the cause of a roadway accident.
• Commercial vehicle enforcement: Enforcing highway laws related to commercial transport, including weight limits and hazardous materials rules.
• Education: Providing public information, handouts, and displays to encourage safe driving and usage of the roads.
• Emergency response: Securing the scene of a traffic accident by using cones and flares as well as providing first aid to the injured.
• Law enforcement: Assisting local police in rural areas, and keeping an eye out for non-traffic violations.
• Maintenance: Observing and reporting damage to the roadways, and conducting hasty road surveys after disasters or the passage of inclement weather.
• Traffic enforcement: Enforcing laws and regulations intended to improve traffic safety, such as speed limits.