#trafficengineering — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #trafficengineering, aggregated by home.social.
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I'm reviewing older studies and thought I'd share this one from Charlotte, NC.
Incorporating #CompleteStreets elements into road project adds a little to the costs, but overall fluctuations in construction costs dwarf those. https://doi.org/10.3141/2393-15
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@capntransit @jerryschippa I was just going to bring that discussion over here.
There's been some research looking at traffic impact studies and trying to make them better. But researchers also warn they might not hold up in court much longer, given their shaky foundation. https://ssti.us/2023/04/03/researchers-warn-traffic-studies-could-face-more-legal-scrutiny/
#TrafficEngineering #TrafficModeling #TrafficForecasting #RoadDesign
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Florida's #CompleteStreets guidance tells road designers how to translate context into target speeds, including transitions through rural town centers.
It also tells local governments what their built environment should look like.
via @NewUrbanism @cnupublicsquare
#RoadDesign #TrafficEngineering #NewUrbanism -
Traditionally, speed limits were set based on how fast the top 15% of drivers travel. State agencies in Minnesota, Massachusetts, Washington, and others are leaning into new approaches that prioritize safety and speed management. https://ssti.us/2023/05/30/state-dots-are-helping-locals-set-lower-speed-limits/
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On Twitter, @boenau points out the AASHTO Green Book is more flexible than some road designers seem to think. https://twitter.com/Boenau/status/1661335068063809536
But a 2010 article found:
30 states require wider lanes than in the Green Book.
9 require a larger minimum turning radius.
12 require design speeds 5-10mph above the speed limit. https://t.co/kRBLdd5hYZ
Chicago reached a deal with the IDOT to use design vehicles smaller than 65'. https://www.illinois.gov/news/press-release.25918.html
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FHWA just published preliminary VMT numbers for 2022. Americans drove slightly more than the previous year, but still less than before the pandemic. Interestingly, traffic delay was still around 50% lower than pre-pandemic, according to INRIX. https://ssti.us/2023/03/06/americans-are-still-driving-less-than-before-the-pandemic/
#TravelDemand #Driving #VMT #UrbanPlanning #TrafficModeling #TrafficEngineering #TrafficForecasting
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A major proponent of #sharrows in the 90s says, “I was wrong.”
“Simply put, sharrows don’t do what we hoped they would. Studies back up that claim.”
https://www.peopleforbikes.org/news/we-were-wrong-about-sharrows #RoadDesign #TrafficEngineering
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This article is spot on. I only took one Transportation Engineering course in my undergrad program.
My masters program was much better, including a Sustainable Transportation course by Norman Garrick that completely changed my thinking.
https://nextcity.org/urbanist-news/america-has-no-transportation-engineers #RoadDesign #TrafficEngineering #Engineering #HigherEd #STEM
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The first story in this episode of 99% Invisible talks about the importance of deciding whether something is a #street or a #road.
https://overcast.fm/+yIOyDLUbI
#Stroad #RoadDesign #TrafficEngineering -
At #TRBAM Carlos Braceras, head of the #Utah DOT, says a project’s Purpose & Need should look beyond movement and safety for cars. He mentions four pillars: 1) improve health, 2) connect communities, 3) provide mobility, 4) help economy.
He also mentions the I-15 EIS process, which is an impressive effort. https://i15eis.udot.utah.gov/
#Transportation #TransportationPolicy #TrafficEngineering #RoadDesign