SIMI VALLEY (CBSLA.com) — Police have a message for Southland medical marijuana users: keep your pot out of your car and off the roads.

Simi Valley police issued the warning after officers arrested a man sitting behind the steering wheel of a parked car with what they described as “a small pharmacy of marijuana products” in the front and back seat, according to police spokesman Robert Arabian.

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Officer Vernon Trujillo approached the suspect and a “youthful passenger” while they were allegedly smoking marijuana in an unidentified residential neighborhood, Arabian said.

Because the suspect provided Trujillo with a medical marijuana card, he was not arrested for possession of marijuana, police said.

“Officer Trujillo could not legally prove the element of driving in this case,” Arabian said.

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Photos released by Simi Valley police showed dozens of colorful medical marijuana “pop top” bottles, several baggies, and a glass water pipe approximately six inches in total height.

The driver was later arrested for contributing to the delinquency of a minor, and was cited and released.

Police say the case serves as a reminder that possessing a medical marijuana card does not relieve drivers of the laws relating to DUI driving.

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California voters approved Proposition 215 in 1996 allowing the medical use of marijuana.