surveyors are all around the bay area right now, including castro valley, where we find ali rasmus live with more on what the surveys are all about. ali. >> reporter: it's all part of a pilot program that bart is thinking about starting in september. so as you said, they're thinking about extending service on friday nights into saturday mornings, sony stead of last train leaving san francisco at 12, it would leave at 1 to 1:30 a.m. but in order to do that, the saturday morning trains would have to assistant an hour later so say, for example, here at this station, the saturday morning trains would start running at 7 a.m., instead of 6 a.m. now, bart's directors want to know how many people would be negatively affected by that, and that's what this survey is welcome we caught up with some of the people giving the survey to passengers on the bart train this morning, asking people things like what is the primary purpose of the trip, do they use it for work. if the trains started running later, would people not be able to get to work, for example? that's one every things they're looking into

ali rasmus explains what buys consists and pedestrians who cross the bridge every day are so concernedout. >> reporter: on a busy day as many as 6,000 bicyclists cross the golden gate bridge. 10,000 walk across. usually pedestrians and cyclists use opposite sidewalks. but those on the west and pedestrians on east but starting today they'll have to share the same space. >> as long as people aren't sort of wandering aimlessly. >> many bicyclists say that's the problem, a lot of tourists walk the bridge, especially during the summer months. >> sometimes tourists wander around without looking. >> the change is because of seismic retrofit work going on on the bridge. crews have to shut county west sidewalk for the next four months. >> it will be a problem. >> the group continues to voice their concerns to the golden gate transportation district. >> maybe there will be something else during the summer when they realize it's a problem on saturdays and sunday 92 officials sunday. >> officials are considering other options, including the possibility of painting lanes in the sidewalk to keep ped

and ali rasmus is live now at the scene with the very latest. ali. >> reporter: we're told there's about a dozen police vehicles out here from san jose. there's a shift change going on now so right now the meeting you see is the overnight officers profession the daytime officers. they will be taking over this case. here's what we do know. the shooting happened just before 5 this morning at a home on 3400 mount prieto drive in san jose. we can't show you the house bus it's around the corner. as you can see this street is completely closed to traffic. this is -- mount rushmore drive between martin and mount prieto avenue. two men were shot and killed in that home, a 17-year-old juvenile was wounded. however, we don't know his condition. we're told he was taken to the hospital. police don't have any information for us now about a motive in this shooting. they also don't have a suspect description. right now we're waiting for san jose police public information officers to give us more information about what happened. also to tell us more about a rela

ali rasmus is live with more on when the service will be disrupted and why.ike, normal service is resuming right now, and the good news is that some of the bart workers here say there are no significant delays to report this morning. trains are running on a normal saturday schedule, you can see it some of the trains just pulled in now. you can see it some of the passengers are making their way out of the station. the big changes that happen will start really tomorrow and monday. and that big change is where some bart passengers will have to transfer. starting tomorrow and monday, if you're trampling between san francisco and the peninsula to dublin and fremont be this is your transfer station, the 12th street oakland station. the reason for the change and shift is that construction work, bart crews have to do some essential work on some of the cables in the trans-bay tube. and while that work is going on, only one train can go through the trans-bay tube at a time. and that's why bart has had to shift some things around with its trains and its transfer points.