Beginning Friday (March 31), tolling is set to resume on the I-680 Sunol express lanes and new toll policies for clean air vehicles (CAVs) will be in effect on both the I-580 express lane and the I-680 express lanes in Alameda County.

The Alameda County Transportation Commission (CTC) and the Interstate 680 Sunol Smart Carpool Lane Joint Powers Authority (I-680 Sunol JPA) announced the updates in a statement Monday.

I-680 tolls begin northbound north of Mission Boulevard/State Route (SR) 262 to SR-84 / Vallecitos Road and southbound from SR-84 / Calaveras Road to SR-237 / Calaveras Boulevard.

I-580 tolling continues to operate across two eastbound lanes, one from Hacienda Drive to Greenville Road and a second eastbound lane from El Charro Road to Vasco Road. Westbound tolling continues on I-580 beginning at Greenville Road and extends 12 miles to the west.

The I-680 express lanes will resume operations between 5 a.m. and 8 p.m. Monday to Friday. FasTrak is required for all express lanes users, and drivers are encouraged to get a FasTrak Flex toll tag for carpooling or a FasTrak CAV toll tag.

Carpools of two or more occupants and motorcyclists can continue to use the lanes for free with a toll tag, officials said.

"Express lanes increase the efficiency of our transportation system for commuters, transit and freight. They offer solo drivers the option to pay a toll for access into the carpool lanes when there is excess capacity, thereby enhancing efficiency of the corridor, and qualified carpools continue to use the lanes for free," said Alameda CTC Executive Director Tess Lengyel.

Information about how to get a toll tag is available at www.bayareafastrak.org.

Officials also outlined new rules that drivers should know for I-680 Sunol express lanes which include:

• FasTrak Flex toll tag requirements for optimal savings

• Dashed road lines allowing drivers to enter and exit express lanes more frequently

• Half-price discounts for solo drivers in CAVs with a CAV toll tag

The new rule that applies to I-580 Express Lanes is:

• Solo drivers in CAVs pay half-price with a FasTrak CAV toll tag

General toll requirements are as follows:

• Toll-free travel for vehicles with 2+ people with a FasTrak Flex toll tag set in the 2 or 3+ persons position

• Solo drivers of eligible CAVs pay half-price tolls with a FasTrak CAV toll tag

• Vanpools, buses and motorcycles use the lanes for free

• Solo drivers in other vehicles can use the express lanes with FasTrak Flex and pay full price

Visit 511.org to learn more about the I-580, I-680 or other Bay Area Express Lanes.