Which agency may deviate from normal traffic patterns while performing official duties or responding to emergency situations?

Emergency services agencies, such as police, fire departments, and emergency medical services, may deviate from normal traffic patterns while performing official duties or responding to emergency situations. This includes using sirens and lights to navigate through traffic more efficiently and safely. Additionally, other agencies like public utility companies may also alter traffic patterns when addressing urgent infrastructure issues. These deviations are typically governed by specific regulations and protocols to ensure safety.