How did the bus operator alert the police?

The bus operator alerting the police by blowing his horn vigorously is a method that is often recognized as an attention-grabbing technique in emergency situations. A horn can produce a loud sound that can pierce through ambient noise and alert people nearby, including law enforcement. This approach relies on the immediate vicinity, making it useful when the bus operator needs to attract attention quickly to signal for help or indicate a serious issue.

While there are several effective ways for a bus operator to contact the police, using a horn specifically serves as an audible signal that can be noticed by individuals nearby, allowing for a faster response to a potentially urgent situation. Other methods, such as using a radio or calling by cell phone, typically require access to communication devices and may take longer to establish a connection.