In this paper, we propose a network controlled group handover scheme in heterogeneous vehicular networks, which seeks to not only maximize system throughput but also minimize the system latency cost and balance the overall load among all access networks. We formulate the handover issue as a combined cost function, and propose a greedy algorithm, which consists of two steps, to solve the formulated optimization problem. In the first step, an auction based method is performed to deal with the linear part in the cost function to realize initial network selection. In the second step, the users are switched in a greedy fashion among the candidate attachment points to get the final optimal solution. Through detailed simulations, we have shown that our proposed algorithm performs much better than the conventional scheme based on the SSF method. © 2012 Binary Information Press January 2012.