I'm sure most people are not worried if their local police are using the latest LED lighting products to pull them over. However, many police departments are switching to the latest in LED lighting vs standard halogen bulbs flashing or moving. LED lights give you a few advantages including
Longer lasting
Less maintenance
Lower overall cost long term with larger initial investment
Higher brightness
Longer range
Faster response
LED lights can be found on your latest police cruiser. Next time you see Lights flash, look closely and see if they are using LED or halogen. LED will be quick and responsive while normal halogen have lag.