Motorists would pass under the gantries at regular highway speeds, avoiding backups normally associated with toll booths, even those that now take E-ZPass. Cameras would photograph the license plates of cars that do not have E-ZPass, and invoices would be mailed to the owners.
To spare local commuters from paying tolls, drivers who use E-ZPass would get to travel through one toll point free and would not start being charged until they drive through a second gantry.
In most cases, that would mean travelers would have to go 50 or 60 miles before triggering a toll, officials said.
"I think we have designed a system that has addressed a major concern people had about the local driver," Barry Schoch, a commission consultant and manager of the toll project, said at a Capitol news conference yesterday.
It was the first detailed presentation about the proposed toll structure of the interstate that stretches across northern Pennsylvania from New Jersey to Ohio.
Toll rates, officials said, would be the same as those charged on the Pennsylvania Turnpike - 8 cents per mile for cars and 30 cents for trucks. But unlike the turnpike, the new system - which officials described yesterday as the future of toll collection - would be completely automated.
Yesterday, the commission released 20 possible locations for the toll points, and it expects to select the final nine in the fall after reviewing public input.
Transportation officials in New Jersey are exploring a similar cashless-toll system for the Atlantic City Expressway.
Putting tolls on I-80, however, isn't a done deal.
Although the legislature authorized tolls last year as a way to generate needed highway-improvement dollars, it is still awaiting the required approval of federal highway officials.
