The police can only complete their work if they can respond to the incident in a timely manner. No matter where they are, when they receive a call that requires their services, it is important that they can reach the scene of the accident as soon as possible. Of course, traffic can sometimes make this difficult. It is not common for roads to be empty, and at certain times during the day, they may be crowded with commuting and other vehicles. At this point, the police need a way to separate traffic and move as quickly as possible.
This is where their police lights come into play. Bright colorful lights can signal to other drivers on the road showing that the police are responding to an emergency and should keep to the side.
Everyone is familiar with the red and blue warning beacons for vehicles on the roof of the police car. Whether they see the lights in the rearview mirror or at an intersection, they know that they should slow down and move aside (if necessary) so that the police can pass without delay.
Police cars don't just respond to incidents. Sometimes they just go out on patrols to make sure everything is safe. However, if they see something that doesn't seem right or needs attention, they must find a way to get the attention of the person they want to talk to.
In this case, they will turn on the visor warning lights and often turn on the sirens until the person they want to talk to notices and stops.
If the person is a pedestrian, they will set the police car light bars so that they can move suddenly (such as U-turn) without causing any danger to other drivers.
The function of the police car light bars is an immediately recognized symbol, and people should pay attention and take action, whether it is paying special attention to the actions of the police car or stopping safely on the side of the road.