The ten small shuttle companies say the airport forces restrictions on them while giving SuperShuttle easier access to passengers. Vans from the smaller services are forced to move around a loop from one terminal to another and can only stop at certain curbs for a limited amount of time.
SuperShuttle, on the other hand, is allowed to move to any terminal of their choice, and they're allowed to park as long as they'd like.
Operators say these restrictions give SuperShuttle an unfair advantage to picking up passengers and forces the smaller operators to pay more money at the airport.
"I mean, it's just basic, fundamental American value, so that everyone operates under teh same rules and pays the same fees," said Gil Sharabi with Airport Express SF. "That's it. We're not asking for a handout."
Vans pay a fee every time they go through the loop. SuperShuttle, they say, is saving money because they're not forced to rotate through that system.
"They just sit there and they don't have to go around," said Ray Sloan, an independent shuttle consultant. "They're paying less than half of what some of the companies in the other zones are paying."
Airport Commission President Larry Mazzola declined to comment as did director John Martin, who referred ABC7's questions to his spokesman, Mike McCarron.
"The smaller companies have a market share and we try to meet all those needs as best we can," said McCarron. "But there is no preferential treatment for anyone. We respect everyone equally and we treat everyone as fairly as we can."