Lowcountry residents one day may be able to take higher-speed public transportation between Charleston and Summerville instead of sitting in their cars in rush-hour traffic.

But they can weigh in now on what they think that transportation system should look like.

The Berkeley-Charleston-Dorchester Council of Governments, starting Thursday, is holding three public meetings to gather input from residents on the route and type of mass transit they would like to see along the Interstate 26 corridor.

The group has been collecting information for the I-26ALT study since the fall.

People can weigh in on whether they prefer a light-rail system, which has short passenger cars and runs on fixed rails in the right of way, or a bus rapid transit, which is a system of buses that operate like trains on fixed pathways.

Kathryn Basha, the group’s planning director, said some of the money for such a system would come from the Federal Transit Administration. But the group would have to apply for it, and the system by which funds are distributed is competitive.

Light-rail systems typically cost between $50 million and $90 million per mile to build, and construction usually takes six to 10 years, according to information provided by BCDCOG. Bus-rapid transit systems usually cost $4 million to $50 million per mile to build, and construction takes four to six years.

Reach Diane Knich at (843) 937-5491 or on Twitter @dianeknich.