my name's bob walsh and i am with scoot. thank you chair melgar, vice peskin and supervisor preston for your time. so i'm actually going to -- we've got two other folks from scoot here. our operations manager and brian bucell our vice president of consumer products to jump into these questions pretty thoroughly. i was going to haveryia come in and how we track our violations separate from the 311s. how do we track sidewalk riding and then also brian will jump in and talk about the sidewalk technology that we demoed on wednesday and specifically supervisor peskin, to your question about alerts and how the vehicle will behave on the sidewalk and that sort of thing. so without further adieu and we'll bring in real posada. >> good afternoon, supervisors. so i'll run through first-time parking violations and to where they have occurred in the past and then i'll pass it to brian. so looking at how we track parking violations, we review our ride end photos. we require our riders of how did they park and then we review them. on that