expensive flat rate depending on which toll booth they pass through, using a barrier toll system. Unstaffed toll plazas with automated cash and credit card machines are located at northbound and southbound off-ramps. Tolls are also collected at the mainline Otay Mesa Toll Plaza near the southern end of the facility just north of Otay Mesa Road. For example, any cash- or credit-paying driver who passes through the Otay Mesa Toll Plaza ends up paying the maximum rate of $3.50 regardless of the distance they traveled. Drivers without FasTrak, credit cards, or exact change have within four business after using the toll road to make a one-time "Pay-by-Plate" payment online, plus a $2 processing fee, or they will be assessed a toll violation. The following table lists the toll rates for passenger cars, both with and without FasTrak (as of July 2020). The toll rate is doubled for vehicles with more than two axles. Exit list See also References External links – includes toll information on the South Bay Expressway and the other San Diego Area toll facilities California @ AARoads.com – State Route 125 Caltrans: Route 125 highway conditions California Highways: Route 125 Federal Highway Administration Project Profiles: South Bay Expressway 125 125 125 State Route 125 125 Companies that filed for Chapter 11 bankruptcy in 2010