Several private taxicab companies operate 24 hour service in Vancouver, including Yellow Cabs, Vancouver Taxi, Black Top Cabs, and MacLure's Cabs. Taxis and drivers are regulated by the city and, as of 2006, 477 licensed cabs operate in the city, including 59 wheelchair-accessible vehicles.[5] A taxi ride to or from Vancouver International Airport costs approximately $30–$32.[6] Cabs in Vancouver are powered by gasoline, natural gas, and electricity.There is also a pedicab company operating in downtown Vancouver called Tikki Tikki pedicabs. Tikki Tikki usually operate on Thursday, Friday and Saturday night and rides start at $6 per person.