A Tucson planning group is turning its attention to the metropolitan area's transportation system now that it has completed work on land-use and population-growth plans.

Imagine Greater Tucson, which describes itself as a "community-driven effort ... to align our future with our shared regional values," is seeking public input on how people want to see transportation take shape in the region.

"Transportation and accessibility is one of our key tenets and one of the things the people of the area told us they want to focus on early on," said Mike Holmes, executive director of the organization.

Two other transportation plans already are in place for the region, one that the Pima Association of Governments maintains as it doles out federal transportation dollars to regional governments and a 20-year, voter-approved plan to spend $2 billion on regional roads administered by the Regional Transportation Authority.

The Imagine Greater Tucson transportation plan is a complement to those, Holmes said.

"They all nest with each other," he said.

The transportation planning process is similar to the public feedback process the organization used for its land use plan, he said. The organization plans lots of public meetings and opportunities for input, he said.

"We're taking the information that the people told us over the last two years, what people wanted to do with transportation, and we're building on that," he said.