Vehicular Ad hoc NETwork (VANET) is an emerging technology ad hoc network integrating ad hoc network, wireless LAN && cellular technology to improve road safety. Geocast routing has been provided information due to increasing number of Intelligent Transport System (ITS) applications favoring geocasting. Various geocast routing Protocol have been developed. In this paper, a survey of geocast routing protocols and some future research issues in geocast routing have been provided. All the considered protocols have been comparatively characterized. This paper lead authors toward some future research challenges in geocast routing Vehicular Ad-hoc NETwork (VANET) information services.