Drivers can enter and exit the 237 Express Lanes anywhere, except where there are double white lines.
Southbound on I-880
When driving southbound on I-880, you may enter the Express Lane in Milpitas, south of Dixon Landing Road where you will see the first overhead Express Lanes FasTrak sign. Solo drivers with a FasTrak transponder risk a ticket if they enter the carpool-only section prior to the first FasTrak sign.
As you continue westbound on SR 237 toward Mountain View, the double white lines will end west of the Zanker Road on-ramp.
Eastbound on SR 237
Going eastbound on SR 237, there are double white lines west of Zanker Road prior to the 237-880 connector. Express lanes traffic wanting to access I-880 South, McCarthy Boulevard, or Calaveras Boulevard will have to exit the lane at Zanker Road.