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In this paper, we investigate the opportunistic spectrum access for cognitive radio vehicular ad hoc networks (CR-VANETs). The probability distribution of the channel availability is first derived by means of a finite-state continuous-time Markov chain (CTMC), jointly considering the mobility of vehicles, and the spatial distribution and the temporal channel usage pattern of primary transmitters. Utilizing the channel availability statistics, we propose a game theoretic spectrum access schemedoi:10.1109/tvt.2013.2274201 fatcat:iiuuovwzjnfbnfogaqr3zbopsu