A system and method is provided for monitoring a vehicle for inhibiting substances comprising detecting, using a movement detector, movement of a vehicle, collecting, using an air sampler, an initial air sample of air within a cabin of the vehicle, analyzing, using an inhibiting substance detector, the air sample to determine whether an inhibiting substance is detected in the air sample, in response to determining that an inhibiting substance is detected in the air sample, increasing the sampling rate of the air sampler, until a predetermined number of samples are collected that also have been analyzed and an inhibiting substance detected therein and sending an alert to an administrator of the vehicle indicating that inhibited driving is occurring.