Sound Transit’s Central Link light-rail line officially opened July 18 with free rides for the public through most of the weekend.

Seattle Mayor and Sound Transit Chairman Greg Nickels called the system a “tribute to vision and persistence” during a preview event featuring many of the key figures who helped make the project happen despite persistent doubts and setbacks.

The ride marked a new age for commuting in south King County. The $2.3 billion line now whisks riders from Tukwila to Westlake, with trains running every 10 to 15 minutes.

By Dec. 31, the line will be extended to nearby Sea Tac Airport, giving passengers an easy, quick launch into Seattle.

Among those who took part in the VIP ride were U.S. Sen. Patty Murray, state Reps. Ross Hunter and Marcie Maxwell, and state Sen. Fred Jarrett.

Murray is credited with securing more than $1 billion in federal funding to build light-rail and related transit projects in Washington.

“I know that these are smart investments that we need to be making in this region, and they are coming to fruition,” she said.

Central Link is the first in a series of regional light-rail lines that will eventually extend to the University of Washington and the Eastside via Mercer Island, Bellevue, Overlake and Redmond. The line is 14 miles long, with 12 stations between downtown Seattle and Tukwila.

Light rail has had its critics from the get-go, with opponents arguing that bus rapid transit is a cheaper, faster, and more accessible alternative.

Murray let people know where she stood during the preview event, suggesting that the system will reduce congestion, protect the environment, and help drive the economy.

“This is truly a win for everybody,” she said.

Murray later talked about the opposition she faced in D.C. after Central Link fell behind schedule and went over budget.

“There’s always naysayers who use words like ‘can’t and won’t and shouldn’t’ ,” she said. “Today we show them that we did.”

Federal Transit Administrator Peter Rogoff was also at the preview event.

“This weekend, the talk stops and the transit begins,” he said.

Central Link runs with two-car trains that hold a maximum of 400 people and eight bikes.

The VIP train caught many of its passengers off guard as it lurched forward from the Westlake Station in downtown Seattle. Murray and Nickels nearly bounced into each other as the car pitched forward while they were chatting with other riders.

Hunter said the run gave him an overall good impression.

“That ride was vastly more pleasant than a bus,” he said. “I think you’ll find that people are going to love it.”