Police lights are signs of the police

Crime scene investigation is a delicate job and a very time critical one also. Police needs to reach the venue fast and gather as much evidence as possible before it is destroyed, and try to get hold of the suspects as well. They are aided substantially in the job by their police lights with various functionalities.
However, activating police light and sirens will warn the criminals of the police's arrival so that they will make good their escape. Some criminals try to mingle with the crowd at the crime scene in order not to arouse suspicion, but if they sense the police's arrival, they are bound to flee. So, many criminologists advocate that the police should arrive at the crime scene in unmarked vehicles, without police lights and sirens to be able to gather evidence and confront suspects better. In many instances, policemen use concealed police lights and sirens to manage this effectively.
While dash is a common choice of many for mounting smaller lights, police lights can be mounted on the deck, atop or underneath the visor, on the windshield, on the grille, on the bumper, or on the side of the mirror. Both larger police lights for use as warning lights, and low profile ones that are sued for stealth operations, are available for mounting at all these places. Most police vehicles store a few extra flashing lights in the vehicle for emergency uses and also to be used as parking lights in dimly lit areas or near emergency sites.
Now that the arrival of LED lights has made the manufacture of very small flashlights possible, two or more police lights can be easily carried in uniform pockets, or in the pockets of vests or underwear. Many police tactical boots have pouches that can accommodate police strobe light, while small lights can be accommodated in an ankle holster also. While smaller police lights make concealment and carrying easy, larger lights are also important because it is needed quite often to double as a weapon of assault. Large lights often remain strapped to the policeman's body in a way as not to impede movement.