Hi Bill,
Could you please send me operational definitions of Feasibility, Mobility and Preference? I understand Mobility to mean the ease with which any individual can move around given the prevailing physical and social circumstances. Being a representative of bicyclists, I would rate the Mobility of each project according to its effect on the ease it presents to cyclists needing to get to where they're going on their bicycles. I understand Preference to mean how much I personally think each project is worth. Again, representing cyclists, I would prefer those projects that will encourage cycling and make cycling safer. If the intended definitions are different from these, I need to know.
Also, if it's readily available, could you please send me the priority evaluation matrices (project rating sheets) in Excel format? I find PDF format good for reading but not so good for working with.
Also, I asked Jing to run the FHWA model by changing NOBL (No Bike Lane) from 1 to O. If he can't do that, I wonder if he could send me his model and data file and I'll make the changes and run it. In general, I think the models do not sufficiently recognize the risk to cyclists at unsignalized intersections with high cross traffic volume. The bicycle safety scores in the LRTP Project 38 Priority Evaluation report indicate that. If I could re-run the models, the results would probably give me the priorities that I would assign to the Project 38 intersections. To understand the models, please go to http://www.fhwa.dot.gov/publications/research/safety/pedbike/06130/06130.pdf
For example, the model for cyclists going straight through an intersection (Bike ISI = 1.13 + 0.019MAINADT + 0.815MAINHISPD + 0.650TURNVEH + 0.470(RTLANES*BL) + 0.023(CROSSADT*NOBL) + 0.428(SIGNAL*NOBL) + 0.200PARKING) says that if there's a bike lane (NOBL=0), the traffic volume on the cross road (CROSSADT*NOBL) and the presence of a traffic signal (SIGNAL*NOBL) at the intersection is irrelevant to the cyclist's safety. I don't think so.
I recognize that I'm the small fry in this ocean. I'll give it my best shot if you don't want to do any of the above but I need to know that.
Frank "Change is a challenge and an opportunity, not a threat."
On Jul 15, 2013, at 4:21 PM, Bill Austin wrote:
We will be providing you with PDF’s of this information as part of the next Committee meeting agenda packet. Please feel free to let us know how we may improve the presentation of this material.