The toll for the Port Mann Bridge will be lowered to $1.50 until the bridge is fully opened while Golden Ears Bridge commuters continue to pay up to $4.20 each time they cross the bridge.
Golden Ears tolls are $2.95 for drivers with a transponder and $3.50 for drivers who have registered but don't have a transponder.
The Port Mann Bridge is opening eight lanes in December at which time the toll will kick in.
After the last two lanes are completed, estimated for December 2013, the full $3 toll will be implemented.
Drivers who register for a free wind-shield decal and tolling account by Feb. 28 will be guaranteed the half-price introductory toll rate for the first year.
As a further incentive to register, drivers who sign up before Nov. 30 will receive a $30 credit on their account, equivalent to 20 free trips for passenger vehicles.
Registered users will also be eligible for various discounts and incentives, including a 25-per-cent discount during peak hours for HOV users, resulting in a reduced rate of $1.13.
The introductory toll rate, $30 credit, and other discounts are meant as incentives for drivers to register for a free tolling account.
Registration opens on Sept. 17 at www. treo.ca, by phone at 604-516-TReO (8736), or in person at the Coquitlam and Surrey service centres located at either end of the Port Mann Bridge.