Mark Scheibe, consultant project manager for Parsons Brinckerhoff, said another option was added to "Alternative 3: The Managed Lane Alternative," which involves making the two elevated lanes reversible to be townbound for morning rush hour and Ewa-bound for the afternoon commute.

The special new lanes initially would serve buses and vehicles with more than one occupant. Scheibe said drivers traveling alone could be allowed on the elevated lanes if they paid a toll.

The city consultant is considering four basic alternatives: 1) no-build; 2) enhanced bus system; 3) managed lane (described above); 4) the fixed guideway, or some kind of rail alternative along various routes.