Today is the last time that humans will collect tolls on the Golden Gate Bridge as the iconic span becomes the first in California and one of the few in the world to convert to electronic toll collection.
The last toll-takers are scheduled to wrap up their shifts about midnight.
By the morning commute Wednesday, motorists heading south on the span are expected to roll through the toll plaza without stopping to pay.
"Just ride through. Do not stop," said Mary Currie, a spokeswoman for the Golden Gate Bridge Highway and Transportation District.
A 27-foot LED sign atop the toll plaza will remind motorists to keep moving. Currie said bridge officials may also employ a loudspeaker or station themselves near traffic to wave people through.
The second toll lane nearest the administration building will be a diamond lane dedicated to carpools of three or more people; FasTrak is required.
Motorists can use the other 10 toll lanes without restriction. The speed limit will increase to 25 mph.
FasTrak users will continue to pay a discounted toll of $5. Carpools of three or more people will pay $3, while most everyone else will continue to pay $6.
FasTrak holders, who represent a majority of bridge users, will continue to have the appropriate toll amounts deducted from their pre-paid accounts.
Motorists who have pay-as-you-go accounts will see that the amounts are deducted from the credit cards they used to set up the account. Such accounts can be set up at the bridge district's website, http://www.goldengate.org/tolls/.