The highway ramps were designed to offset an estimated 80,000 vehicle trips coming from the development each day.
The $3 billion project could generate 80,000 vehicle trips a day, and the ramps are meant to help move cars in and out.
The streetscape is being reappropriated in many cities for nonmotorized activities, and younger drivers are forsaking vehicle trips in favor of smartphones and other means of "virtual mobility".
By providing an alternative to driving, Downeast Transportation estimates that the service has replaced 2.3m vehicle trips and reduced 21,504 tons of greenhouse gas emissions.
Mr. Kehs said, for example, that in the fishing and birding season there were more than 100,000 vehicle trips just to the tiny bay village of Fortescue.
And the number of participants in off-highway vehicle trips grew twice as fast as those in other activities, including things like rafting and sightseeing.
In another change from Mr. Bloomberg's proposal, it would not charge people for vehicle trips that take place within the zone.
"It's tourism in the season, unemployment in winter," said Tony Russo, 24, who grew up in Las Vegas and now leads all-terrain vehicle trips into the back-country.
Mr. Schaller said that vehicle trips citywide peaked in 1999 and then leveled off, with a dip in 2001 as a result of the terror attack on the World Trade Center.
In a final step, vehicle trips are generated and assigned to a network [35, 39, 43].
