But some rail advocates are concerned that the proposal would compromise the creation of a strong rail service between Boulder and Denver. It's a flexible concept. The configurations are different in each city that uses the system, Heisler said. The Los Angeles BRT runs on existing streets. And a six-line BRT network in Curitiba, Brazil, has enclosed transit stations where riders pay and wait for buses.
Money is also an issue for Boulder leaders and regional transit officials.
The BRT system would continue serving Boulder riders on the west side who catch regional buses along Broadway. It also predicted that 37,500 carpools a day will drive U.S. 36 in 2020. The firm did not estimate current carpool numbers. Under the BRT plan, carpoolers would share a single bus lane each way, extending 15 miles from Table Mesa to Westminster. Buses would stop every 5 to 10 minutes during rush hours and every 10 to 15 minutes at other times.