When does the taxicab exception not apply?

The taxicab exception does not apply when a passenger does not choose the taxicab company providing the service. For example, many ADA paratransit agencies contract with taxicab companies and other entities to provide ADA paratransit service to ambulatory passengers. In those situations, when the ADA paratransit provider (not the passenger) contacts the taxicab company to schedule the ride, the drug and alcohol rules apply to the taxicab company providing the service. Similarly, if a public transit agency provides vouchers to passengers to use for one taxicab company, the passenger does not have a choice of which company to contact, so the drug and alcohol rules apply.