As Massachusetts Department of Transportation officials prepare to embrace all-electronic tolling in 2016, state transportation officials announced Wednesday a new toll structure that will save some drivers in Western and Central Massachusetts money.

With the new, all-electronic tolling system, drivers will no longer pay by E-ZPass transponder or cash as they exit, but rather while they drive. Tolls will be collected electronically either through a motorist’s E-ZPass or via a program in which a camera captures the license plate and the vehicle’s registered owner is billed by mail.

The new electronic tolls will not require drivers to slow down when paying their toll.