It's time to change the course of the rail transit debate. Amid the flurry of newspaper and television ads, commentaries, letters and the blogs, the political motivations — of both proponents and opponents — are constantly called into question.

Unfortunately that does little to ensure that Honolulu gets the best and most efficient transit system possible. A healthy debate — particularly on an issue as important as rail transit — should occur all along the way. But it's time to cut the political sniping and move on to a constructive community conversation centered on accurate information and key components of the project. And that conversation must include voices beyond city officials, special interests and the same opponents who have been battling rail transit for decades. It should engage a broader segment of the community.

First, a quick recap: On the funding issue, the Legislature approved the half-percent excise tax increase; the governor allowed it to become law; and the tax is already being collected. In using the excise tax venue, tourists also contribute to paying for the system. The money, as required by law, must be spent on transit. Making the most of those transit dollars should be at the heart of this discussion.

Congress already approved $15 million for the project last year, and the Senate Appropriations Committee Thursday unanimously approved an additional $20 million. Another $865 million in federal funds is expected for the construction phase.

Following federal guidelines and after numerous public hearings, an analysis of alternatives was completed, including ridership and cost studies. And the locally preferred alternative, rail transit, was selected. The route, which thankfully now includes the airport, was approved by the City Council — again after numerous public meetings — and the draft environmental impact study is under way, in conjunction with federal requirements.

All along, transit has been pitched as part of a multi-modal solution that will include connections to buses, shuttles, ferries, and more. Additionally, the state is reviewing changes that could also improve traffic, such as a four-day workweek and telecommuting. And efforts to push more employment centers and services to Kapolei, "the second city," continues. That's good because we'll need all this and more.

That said, there are still key issues that require public input and debate. Among them:

• Cost. Public input on finding efficiencies in the construction process and careful review of operational costs will be important. The bidding process for construction projects tied to transit must be transparent, so taxpayers can have confidence that their dollars are being spent wisely.

• Environmental review. This extensive review includes a public comment period. The study covers a wide range of concerns — from the discovery of iwi to land acquisitions to effects on our environment. It's crucial that the broader community share their concerns and have their questions answered.

Making sure we're well-prepared to deal with these issues effectively will also minimize costly delays.

• Development along the transit line. Community input is crucial here as well. Transit-oriented development surrounding rail stations presents a rare opportunity for the public to shape their communities. Maintaining each community's individuality should be the goal. What works in Kapolei, for instance, won't necessarily make sense for our urban core.

Development around transit stations could include a range of retail shops, restaurants, housing and open space. This process has already begun in Waipahu. Residents have the opportunity to decide on the look and feel of development, which will help define the area for generations to come.

Let's not leave this important task to developers or other special interests. Take the time to make your views heard.

We've heard enough of the heated rhetoric and petty politics. It's time for the broader community to step into the discussion and help shape this project, and our future.