Create your own modules that flash and strobe in red and blue just like the police. It includes all the components necessary to construct two separate modules that utilize an Arduino for programming. It's a fun project to build, and it even looks cool when it's done. An Arduino (or compatible MCU) is required for programming, but is not included. If you need one, they are available at Jameco, (P/N: 2151486). See the complete write-up with step by step instructions on the Jameco Workshop page. Scroll to the bottom of the page for a video demonstration of the completed project.
Note: This kit is not intended to be used on public roads, nor should it be. Impersonating an officer or flashing red or blue lights from a vehicle is illegal in most, if not all states. (For off-road use only).