Vehicle ID encoding is a cybersecurity technique used to embed a unique identifier within a vehicle's communication signals. This method is particularly important for emergency vehicles, such as ambulances, fire trucks, and police cars, to ensure their signals can be authenticated and distinguished from unauthorized sources. By encoding a unique vehicle ID, systems like traffic signal preemption or secure vehicle-to-infrastructure (V2I) communication can verify that a request truly originates from an authorized emergency vehicle. This helps prevent spoofing attacks, where malicious actors might try to impersonate emergency vehicles to gain priority access or disrupt traffic systems. Vehicle ID encoding enhances the security and integrity of intelligent transportation systems.