What year were police cars first equipped with radio receivers?

The correct answer, indicating that police cars were first equipped with radio receivers in 1929, reflects a significant advancement in law enforcement technology. The implementation of radio communication allowed police officers in vehicles to stay in constant contact with dispatch and other units, improving response times and coordination during emergencies.

Radio technology was increasingly becoming more practical and accessible by the late 1920s, and this innovation marked a pivotal moment in police work, facilitating more effective communication, which is essential for public safety. This development played a crucial role in the evolution of law enforcement operations, setting the stage for the sophisticated communication systems utilized today.

In contrast, the subsequent years listed in the other options either reflect later advancements in radio technology or the adoption of more sophisticated forms of communication within police vehicles. However, the landmark move to install radio receivers in police cars was indeed first achieved in 1929.