Hitchhiking is a method of transport from one location to another in which a passenger fulfills his intention to get a free ride from another traveler. The goal of this research was to build a functional behavioural model, which would explain hitchhiking behaviour using extrinsic and intrinsic motivation, personality, trust, and the intention to hitchhike. To conduct the research, three new scales were constructed, one of which had two subscales: subscales of extrinsic and intrinsic motivation, the scale of hitchhiking intention, and the trust scale. A sample of 388 took part in an online survey, 56,2% of which were women, 40,5% men, and 3,3% identified differently. The average age of the participants was M=28,43, and the articipants were mostly hitchhikers. The questionnaire was distributed in different traveling groups on “Facebook” and with snowball sampling. Structural equation modeling showed that trust, extroversion, and agreeableness are directly and positively correlated to the intention of hitchhiking. Neuroticism and conscientiousness are negatively and directly correlated do the intention of hitchhiking, while extroversion an agreeableness are indirectly and positively correlated with the intention of hitchhiking through extrinsic motivation as a mediator, and trust is indirectly and positively correlated with the intention of hitchhiking through both intrinsic and extrinsic motivation. Finally, extrinsic and intrinsic motivation for hitchhiking are directly and positively correlated with the intention to hitchhike.