In an outdoor visible light communication (VLC) system, a photodetector is vulnerable to strong sunlight, bright elec-tronic billboards, and numerous artificial light sources, which leads to its saturation or nonlinear behavior. To solve this problem, this paper first overviews the research progress on VLC for outdoor intelligent transportation. Then, it introduces the transceiver techniques of interference mitigation, including Fountain codes for optical channel fluctuation and occlusion, reception techniques by attenuation diversity to mitigate strong ambient light interference and detector saturation, and the auto-alignment and tracking methods under multiple light source interference. Finally, the future improvement and research direction of these interference mitigation transceiver technologies are pointed out.