In a move that officials say will save taxpayers $5 million annually, The Massachusetts Turnpike's new all-electronic toll collection system will launch on Oct. 28.

The system will replace the series of toll booths that dot the East-West route from Boston to West Stockbridge. Metal gantries above the roadway will automatically detect E-ZPass transponders in cars and bill the correct toll amount to the driver's account.

"Somebody goes under a gantry, the system looks for an E-ZPass, it finds it, it deducts the gantry rate from their transponder," MassDOT Highway Administrator Tom Tinlin told the department's board of directors Monday.

If a car isn't outfitted with an E-ZPass, cameras on the gantry will detect the car's license plate number and a bill will be mailed to drivers without an electronic account on record. The bill that comes in the mail could come with a bit of sticker shock, as the pay-per-plate rates range from a few cents more than the E-ZPass rate to over $4 more for longer trips.

"This is not a punitive measure. It is to cover the cost it takes to mail somebody and notify somebody and tell them that they have to pay their toll. So we're balancing what is fair for the folks who are doing it the way that we would hope and the folks who may need a little more incentive," Tinlin said.

Tinlin said the new system will be more convenient for drivers, reduce greenhouse emissions by letting drivers maintain highway speed as they pass through the gantries.

According to MassDOT, it cost around $263 million to design and build the new system, including demolition of the toll booths.

The board voted Monday to completely demolish the Turnpike toll booths by the end of 2017.