San Jose is living proof that crowded cities can build their way out of congestion:
Between 1989 and 1994, the region gained 100,000 new jobs, yet new road construction
cut the delays encountered by the average rush-hour driver in half. ...
In 1984, voters in Santa Clara County (of which San Jose is the seat) approved a
ten-year half-cent sales tax for new highways. This allowed the construction of several
new freeways and the expansion of several more. As a result, the Texas Transportation
Institute estimates that the delay facing each rush-hour commuter declined from 100
hours per year in 1989 to just 50 hours in 1994.
Utah Reduces Congestion With Increased Road Capacity
From UDOT web site: Since the Parkway opened to traffic it is estimated that traffic
on I-15, between the U.S. 89/Legacy Parkway/I-15 interchange in Farmington and the
I-215 exit in North Salt Lake, has been consistently reduced as much as 20 percent.
Additionally, the Parkway provides a unique "escape route" from the Salt Lake City
area northward, when accidents, construction, or other events significantly slows,
or even closes I-15.
What a relief extra lanes on the N.J. Turnpike are
What a difference a few extra lanes make.
The 35-mile stretch of the New Jersey Turnpike from Mansfield in Burlington County
to East Brunswick in Middlesex County was dreaded by motorists, who were regularly
held up in annoying traffic jams.
But now - a few weeks after the completion of a $2.3 billion widening project - many
are singing the turnpike's praises, even as the major artery faces its first big
test: the Thanksgiving weekend, with the year's heaviest volume.
The usual stop-and-crawl delays of a half-hour to nearly an hour - especially on
the Wednesdays before the holiday - should be history, officials said. No more backups
of 11 miles northbound and nine miles southbound - the standard for travel on the
day before Thanksgiving.