What action should an officer take when they observe an illegal street racing event?

When an officer observes an illegal street racing event, coordinating with other units and gathering evidence is the most appropriate action. This approach ensures that the officer can effectively address the situation while properly documenting behaviors and instances related to the racing. Gathering evidence, such as video footage, photographs, or witness statements, can be crucial for any subsequent legal actions or prosecutions.

Moreover, coordinating with other units allows for a more organized response, improving the safety of both the officers and the public. It enables law enforcement to plan a strategic approach to safely intervene without escalating the situation or creating a hazardous environment for bystanders. This method not only focuses on immediate intervention but also on the broader implications of illegal street racing, such as the potential for serious accidents and public safety threats.

The other choices may not adequately address the severity of the situation. Ignoring an illegal event fails to uphold the law and compromises safety. Engaging directly with participants can lead to dangerous confrontations without a coordinated plan. Waiting for backup without taking proactive measures can allow illegal activities to continue unchecked, risking further incidents. Therefore, gathering evidence and coordinating with other units stands out as the most comprehensive and responsible response.