Pilot in BC Canada: @velometro 3-wheeled enclosed #ebikes operating as shared vehicles. Think Car2Go+bike. Geofenced to keep off pedestrian walkways. #TRBAM 
If @velometro classified as bikes they can be in bike lanes but you couldn't park these at a bike rack. Lots of policy issues to be worked through. #TRBAM #bikeshare (?)
Traffic operations questions created by low-power vehicles that aren't quite bikes. If they operate (maybe in general motor vehicle lanes) + you want smaller vehicles used for urban delivery + working for bike mode shift, what happens? #TRBAM #LEVs
"You can talk about equity -- but I still want my project." Reality in MPOs described by Gloria Jean Jeff, Wichita Area MPO. #TRBAM #MoveEquity
MPOs must do more than avoid discrimination -- they must work affirmatively on behalf of populations as well as places. #TRBAM #MoveEquity #planning 
Need to build equity considerations into planning process from beginning, not just apply performance measures at the end. #TRBAM #MoveEquity #planning
Equity analysis in plans: Compare access by modes, look at effects on populations. Transit riders come from wider geographic area. #TRBAM #MoveEquity #planning 
CA climate policy equity analysis cited as good example of plan grounded in equity: laborcenter.berkeley.edu/pdf/2016/Advan… #TRBAM #MoveEquity #planning 
Chelsey Palmateer, PhD student & MNDOT engineer, presenting conservancy.umn.edu/handle/11299/1… looking at justice in the provision of transportation. #TRBAM #MoveEquity
Accessibility (defined as ability to reach your destination, not ADA) analysis by modes. Transit: conservancy.umn.edu/handle/11299/1… #TRBAM #MoveEquity
Shima Hamidi of @utarlington on transportation component of housing affordability. Looking at HUD assistance programs, housing is located in places w/high transpo costs. H+T too high. #TRBAM #MoveEquity
A resource on considering transportation cost of housing location: htaindex.cnt.org from @CNT_tweets. #TRBAM #MoveEquity
Assessing equity implications of the Transportation Improvement Program (TIP) process in MPOs/RTPOs. @AlexKarner: Regional plans are slick/long-term, TIP project lists are near-term/real/boring spreadsheets. #TRBAM #MoveEquity
Typical equity analysis of TIP: "A visual evaluation of the maps does not reveal noticeable trends or patterns of disproportionate impact. The geographic distribution of transpo improvements throughout the county appears relatively balanced." #TRBAM #MoveEquity
Looking at map of project distribution assumes proximity to transpo projects is always a benefit. All projects entail burden as well as benefits; can't look at those in isolation; not all groups derive same benefit from investments. -@AlexKarner #TRBAM #MoveEquity
Air quality an example of transpo project burden. Both benefits/burdens decline w/distance from a project. @alexkarner research assumption: Groups benefiting from/burdened by projects should be the same. #TRBAM #MoveEquity
Who benefits/who is burdened discussion of highway expansion by @alexkarner reminds me of this @IanLockwoodPE cartoon. #TRBAM #MoveEquity 
Whether the results of any equity analysis/method are truly meaningful will only be known when they're shared with the public. -@alexkarner #TRBAM #MoveEquity
More equitable transportation plans/projects will ultimately result in lower societal costs overall. -@alexkarner #TRBAM #MoveEquity
Travel motility: skills, knowledge, attitudes, & norms around transportation. @cgthigpen looked at how behavior/attitudes/norms change over time in childhood, what role bike experiences play in developing attitudes/norms. #TRBAM #biking #kidsbike
Longitudinal study by @cgthigpen in Davis, CA; 50mi on-street bike lanes, 50mi off-street bike paths. 30-50% of kids bike to school--but that means 50% don't in a very bike-friendly town, so why not? #TRBAM #kidsbike #biking
Bikes represent independence/freedom more as kids get older. Implications for infrastructure: Parents can feel more comfortable letting kids ride where there's abundant connectivity. @cgthigpen research #TRBAM #biking #SafeRoutesNow 
Twitter feature I need: ability to untag people I've inadvertently kept in my thread because I tagged them in an earlier tweet. Sorry if I #TRBAM-ed you.
Cyclist trip purpose on off-street urban #trails in 3 US cities: @DaveEderer research. Trip purposes may differ for people walking vs biking; trails previously thought of as recreation, move toward understanding transpo network role. #TRBAM #infrastructure
About 2:1 male:female across all 3 sites in @DaveEderer study of bike trip purpose. #TRBAM #bikedata #trails 
#Trails clearly important in bike transportation network. Good lessons learned for other surveys that could easily be done as people ride by shared by @DaveEderer. #TRBAM #bikedata 
#Trails funding comes from various sources for different purposes; full use/value of trail emerges over time. #TRBAM #bikedata #infrastructure 
Prioritizing segments to improve low-stress bike network connectivity in Delaware Valley. Improve most direct connections possible between "islands" of low-stress network. #TRBAM #infrastructure #biking 
DVRPC bike low-stress network map dvrpc.org/webmaps/BikeSt…. @PennDOTNews now looking at this in context of resurfacing schedule to prioritize improving connections as they come thru w/projects. Bingo! #TRBAM #infrastructure
DVRPC defined low-stress bike network by traffic speed, volume, presence/absence of bike infrastructure. They haven't yet overlaid equity analysis, could do so in future. #TRBAM #biking #MoveEquity
DVRPC analysis of low-stress bike network looked at connectivity between census blocks. Next analysis will look at census block-to-transit-stop connectivity. #TRBAM #MoveEquity #transit #biking
Next onslaught of learning: pedestrians + automated vehicles. #TRBAM #AV #automatedvehicles #walkability
Walking=behavior, #walkability=environment. Public demand+ economic case for walkability, pedestrian deaths rising. What will effects of connected automated vehicles be in brave new world? #TRBAM #automatedvehicles #CAV
My editorial comment: w/emergence of automated vehicles more important than ever to be clear in language use. Say DRIVER when you mean person, CAR when you mean the box. #DriverNotCar #TRBAM #automatedvehicles #AV
Sensing/warning tech may have benefits for people walking/ biking, those who need more crossing time. #TRBAM #MoveEquity #walking #accessibility 
Some elements of connected automated vehicles may increase safety for people walking/biking, others may make it worse. #TRBAM #automatedvehicles #RoadSafety #VisionZero 
Example of tradeoffs between connected automated vehicles & walk/bike modes: If vehicles are platooning you lose space for people to cross. #TRBAM #CAV #walkability #RoadSafety
Research question: Will connected automated vehicles save pedestrian lives? Finding: NOT in near future + NOT without critical caveats. #TRBAM #automatedvehicles #AV #walking #RoadSafety 
Every sensor type has limitations. Especially striking that several don't work well for reflective surfaces; can we stop saying special jackets will solve everything? ("negotiable" refers to avoidable fatalities) #TRBAM #RoadSafety #VisionZero #walking #biking 
Radar on AVs has weaknesses including difficulty sensing "small pedestrians"-- children. #TRBAM #automatedvehicles #RoadSafety #VisionZero #walking #SafeRoutesNow
Takeaway: Still need speed management, infrastructure/crossing improvements for decades to come to improve safety for people walking/biking. Great prezo by Tabitha Combs. #TRBAM #automatedvehicles #RoadSafety #VisionZero 
Researcher notes that weather interferes w/functioning of sensors today. I'm now imagining a platoon of automated freight vehicles on snowy, icy WA roads. #TRBAM #automatedvehicles #RoadSafety #VisionZero
Next up: @ZiqiangZeng from @UW on V2X communication system for connected vehicles to improve unsignalized crossings for people walking/biking. #TRBAM #RoadSafety #VisionZero #walking 
Comment from audience on use of V2X systems: Onus for detection/avoidance absolutely belongs w/the driver/vehicle. Smartphones go dead, kids/seniors may not carry them. #TRBAM #RoadSafety #VisionZero #MoveEquity
Suggestion from audience on V2X: The X should be mounted somewhere as part of street infrastructure, not on individual people. #TRBAM #RoadSafety #VisionZero #MoveEquity
Usage question: What's the driver equivalent of "darting out" (so often used to describe action of someone walking)? I encounter unexpected behavior by drivers regularly whether I'm walking, biking or driving. #TRBAM #walking
Serious issue w/fatal crash data in driver vs pedestrian/bicyclist: Driver is the one who survives & talks to police. Their version becomes the official explanation of what happened. #TRBAM #RoadSafety #VisionZero
Fundamental safety question in connected automated vehicles described by presenter as "Who will be sacrificed?" Proprietary tech means we don't know enough. Big policy questions. #TRBAM #automatedvehicles #CAV #AV
Moral/ethical questions around CAVs: Paper on this one of the most downloaded papers on @NASEMTRB site, says one of the speakers. Great questions in session on pedestrians/automated vehicles. #TRBAM #RoadSafety #VisionZero
Kind of a thrill to see one account I created (@SpokaneBikes) + one I managed for several years (@WAbikes) show up in dataset for #biketowork semantic analysis research at #TRBAM. #TwitterSmarter #twitterstorians 
Vision Zero evaluation workshop this a.m. at #TRBAM. Up first: Data types/sources w/ @VisionZeroSF visionzerosf.org #RoadSafety #VisionZero
In San Francisco open source geospatial data repository transbasesf.org links transportation + public health data. Important that they got all agencies tracking/reporting data consistently. #VisionZero #TRBAM
Driver failure to yield a top cause of pedestrian injuries. San Francisco award-winning "It Stops Here' campaign aimed at drivers sfmta.com/blog/%E2%80%98…. #TRBAM #RoadSafety
#VisionZero SF says they're working to reduce “avoidable disparities in injury outcomes that result from unjust and unfair differences in social, economic, environmental and political conditions” sfcta.org/sites/default/… #TRBAM #MoveEquity #RoadSafety
Important not to create new inequities while seeking to reduce injuries. #VisionZero SF says they're working to ensure targeted law enforcement doesn't contribute to racial profiling, deportation. #TRBAM #MoveEquity #RoadSafety
Engineering of past 50yrs focused on moving cars quickly/efficiently. Paradigm shift to value safety over speed as fundamental value. -Hans Larsen, Public Works Director Fremont CA #TRBAM #VisionZero #RoadSafety
After adopting #VisionZero Fremont CA looked at transpo capital budget, directed $$ immediately away from throughput toward safety. Put your money where your mouth is. #TRBAM #RoadSafety 
If it's a long way between official crossings & people are walking across anyway that isn't their fault--that's the fault of the designers. -Hans Larsen, Fremont CA Public Works #TRBAM #RoadSafety #VisionZero #walking
Use of tech to help evaluate #VisionZero programs: video analytics project in @bellevuewa ite.org/visionzero/vid… w/@UW @Microsoft @wsdot + other partners. #TRBAM #RoadSafety
Under development: @umnews Ctr for Transpo Studies smartphone app to collect detailed travel activities daynamica.umn.edu/features/index…. Need to provide phones/data plan to get info from low-income participants. #TRBAM #RoadSafety #VisionZero #MoveEquity
Jim Curtin of @seattledot at #TRBAM #VisionZero workshop: Safe driving app pilot showing results seattlebikeblog.com/2018/01/05/sea…. #RoadSafety #DriveSafe
Vision Zero provides framework for elected officials to support something positive that works. -Jim Curtin, @seattledot #TRBAM #VisionZero #RoadSafety
40,000+ people per year die in US due to driving. We should be freaking out but people are complacent. Important to track serious injuries as well--people's lives are changed forever. -Jim Curtin @seattledot #TRBAM #VisionZero #RoadSafety
We've done a lot to improve safety for drivers/passengers in vehicles. Haven't done the same for people walking/biking. In Seattle fatalities skew heavily toward older people: 70% of pedestrian fatalities last year. #TRBAM #VisionZero #RoadSafety #HealthyAging
Don't talk about road diets or 85th percentile. Explain what numbers MEAN. We have XX people driving Y-MPH on this street meaning Z people likely to die if hit. So let's slow the street speed. -Jim Curtin #safetyoverspeed #TRBAM #VisionZero
Important to acknowledge that projects will change things for drivers. Put in context:, e.g. "Delay 1min at peak travel time, rest of the day likely no difference." Share crashes, volume of people using walk/bike/transit. #TRBAM #VisionZero #safetyoverspeed
Prior to #VisionZero adoption police briefing in a.m. = "Go write tickets." They go to busy arterial, write tickets. W/safety focus use data to focus enforcement efforts on high-crash corridors, top contributors: speeding, impairment, distraction. #TRBAM #MoveEquity #VisionZero
Important change in Seattle based on research: Lowering default speed limit to 25mph arterials, 20mph non-arterials. 2500mi of streets affected; design/signal changes coming along for self-enforcing streets. #TRBAM #20IsPlenty #VisionZero #safetyoverspeed
Seattle @seattledot Bicycle/Pedestrian Safety Analysis seattle.gov/Documents/Depa… looked at street design, land use, terrain, lighting, more. Systematic proactive approach to prioritize investments. #TRBAM #VisionZero #safetyoverspeed #RoadSafety #bikedata #walkdata
Piece by @danvock n @GOVERNING to drop into #TRBAM #VisionZero stream governing.com/topics/transpo… …. h/t @NACTO. #safetyoverspeed #RoadSafety
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