An example of emergency maintenance for traffic signals is?

Emergency maintenance for traffic signals refers to unexpected situations that require immediate attention to ensure safety and proper functioning. Power outages or surges due to electrical storms exemplify this type of urgent need. When a power outage occurs, traffic signals may stop functioning entirely or operate improperly, creating a hazardous situation for drivers and pedestrians. Addressing these issues quickly is crucial to restore normal traffic flow and prevent accidents.

Other options, while relevant to traffic signal maintenance, do not fall under the category of emergency maintenance. Routine checks involve planned inspections and upkeep that can be scheduled and are not reactions to unforeseen events. Signal adjustments typically pertain to fine-tuning the operations of traffic signals, which can also be planned and carried out during regular maintenance. New installations are part of an upgrade or expansion process and do not represent a response to an emergency situation. Therefore, the situation involving power outages or surges distinctly qualifies as emergency maintenance due to its immediate impact on traffic safety.