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
Cycling Experience, Comfort & Stress research tweets coming right up. #TRBAM #biking
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
Paper detailing San Francisco #VisionZero efforts docs.trb.org/prp/15-4847.pdf #TRBAM #RoadSafety
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
Testing #unroll @threadreaderapp on #TRBAM tweetflood I put out to see how far back it will go.

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More from @BarbChamberlain

Sep 16, 2018
Kicking off #WalkBikePlaces with an infrastructure tour on @BlueBikesNOLA. Several under way now; I'm on the one that looks at public art, placemaking. #bikeNOLA
First stop: Jackson Square, National Historic Site, named for Andrew J. Led battle that saved NOLA in 1812 but owned enslaved people. Should his statue come down? #WalkBikePlaces
Beautiful murals! Families of Plessy and Ferguson reconciled with art in celebration. Studio BE right across the street--big studio space in covered warehouse. @BlueBikesNOLA station right here at park.
Read 144 tweets
Aug 31, 2018
The western US has been on fire for weeks, with unbreathable air confining people to their homes and keeping some from getting out on a bike. In other parts of the world it’s straight-up car pollution doing the same. We’re going to CLEAR THE AIR with #bikeschool #bikes4climate.
We’re heading toward Global #ClimateAction Week so you’ll see that hashtag + #bikes4climate tonight along with #bikeschool.
My hot take: Too many discussions under headlines with words like #sustainability or #climate or #green ignore bikes as clean transport.
****Q1: How have forest fires, pollution, other air quality issues affected your bicycling? Fun fact (h/t @andrealearned): Bikes invented as tool due to volcano eruption pollution. See buff.ly/2LEP6vi by @lloydalter. #bikeschool #bikes4climate #ClimateAction #bikehistory
Read 26 tweets
Mar 19, 2018
I find so many great walk/bike/place articles to include in @WSDOT #WSDOTactive Walk and Roll E-News it's getting too long to look at. How many links do YOU want to see in a reading round-up? (Subscribe: bit.ly/WSDOTactive-en…)
After each edition of @WSDOT #WSDOTactive Walk/Roll E-News I take a look at which links were most popular. I'll tweet out last week's top clicks to give you an idea of what you'd see if you subscribed here: bit.ly/WSDOTactive-en…
Top links most recent #WSDOTactive e-news:
1/ Washington Bike Summit cascade.org/connect-washin… info from @CascadeBicycle #WABikeSummit
2/ Spreadsheet to update w/locations of bicycle #traffic signals in North America docs.google.com/spreadsheets/d…
#bikes #activetransportation
Read 7 tweets
Jan 20, 2018
Before you RT this catchy infographic, a thread--
#RoadSafety #VisionZero #dataviz
Infographics work. I clicked. My first response: Catchy title but the piece provides zero basis for the statement. Data-driven safety improvements are essential--so where's the data? This could have been so much more. #RoadSafety #visionzero
Dug a bit. Googled law firm credited on map. Got thedrive.com/sheetmetal/144… telling me it's @NHTSA "accident" (sic) data for "automobiles/pedestrians". Where are bicycles/motorcycles? More Google. #CrashNotAccident #RoadSafety #VisionZero
Read 19 tweets

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