and chris hwang, board president of walk oakland, bike oakland. thank you both for being here. nicole, i wanted to ask you, first of all, why are the number of pedestrian deaths rising in large cities like san francisco, like san jose? >> you know, we don't really know exactly why theorizing over the last year, for instance. but we know what the solutions are. so we're really focused on making progress and making a change right now. >> could things like technology, the use of mobile devices, be to blame? what about the economy's picking up, more people are on the roads, could those are factors as well? >> i have no idea. but i know that for many, many decades we've been designing our cities to bring cars through the streets as quickly as possible. and that has been a priority. and i think that that concept and priority is truly outdated. and needs to be fixed. >> so what is truly the cause? you mentioned some of the environmental and the roadway factors. but is it primarily a case of drivers not being careful enough? or are pedestrians to blame in a fair number of these acciden