Next week, Monday through Friday, bikes will be allowed on all trains all day at all stations, BART spokeswoman Luna Salaver said. Cyclists will be asked not to use the first three cars of any train.
Under BART's current rules, bikes are not allowed on most trains during commute hours. During non-peak hours, bikes can be brought on trains but not in the first car.
Bicyclists are barred from entering crowded train cars, including during the pilot program.
Next week's trial period follows an earlier one-month pilot program in August, in which bikes were allowed on all trains but only on Fridays. That first pilot program brought divided reviews, Salaver said.
About 37 percent of those who responded to a survey afterward gave positive feedback, while another 37 percent disliked having more bikes on BART, she said.
After the second pilot program, BART will ask everyone -- bike riders and other passengers alike -- to take part in another survey on BART's website.
"This time, we get the whole week experience," Salaver said. "We need feedback from all parties."
Based on the results of the second pilot, a proposal for permanent changes to BART's bike policy may go before the BART board.
BART Board President Tom Radulovich and representatives of Bay Area cycling communities were scheduled to discuss the pilot program at a news conference this morning.
Peak hours are from 7 a.m. to 9 a.m. and from 4 p.m. to 6 p.m.