The key benefit of taxi top advertising in taxi stands out when GPS and 4G network function popularly adopted. User can remote control the content from office and distribute to thousands of displays on the top of hundreds of taxi. And the content of different taxi will be changed automatically accordingly to the location taxi arrives. This makes the advertisement more usefully and targeted. Compared with normal taxi top LED signs, LCD makes the pixel smaller and cheaper. With 3500nits brightness, it can attract people’s attention easily when it moves in fast speed or stops at road side.