Greg GRIFFIN
@gregpgriffin.bsky.social
PhD, AICP. HusbandFather biking & researching safe and connected communities in the Western Cascades and Willamette Valley.
https://gregpgriffin.myportfolio.com/home
https://gregpgriffin.myportfolio.com/home
Today’s Friday, and downtown Portland is doing alright. Mark me as safe 😜
November 7, 2025 at 6:24 PM
Today’s Friday, and downtown Portland is doing alright. Mark me as safe 😜
City leaders need to consider biking, scooting, and transit more when shaping urban areas.
November 4, 2025 at 1:53 AM
City leaders need to consider biking, scooting, and transit more when shaping urban areas.
“Following the money“ to uncover root causes of public problems is tough. My cases from Austin, Texas and Banjul, Gambia provide examples combining qualitative & quantitative methods.
Speaking of money, @brisunipress.bsky.social offers 50% off right now: bristoluniversitypress.co.uk/transport-tr...
Speaking of money, @brisunipress.bsky.social offers 50% off right now: bristoluniversitypress.co.uk/transport-tr...
July 2, 2025 at 9:25 PM
“Following the money“ to uncover root causes of public problems is tough. My cases from Austin, Texas and Banjul, Gambia provide examples combining qualitative & quantitative methods.
Speaking of money, @brisunipress.bsky.social offers 50% off right now: bristoluniversitypress.co.uk/transport-tr...
Speaking of money, @brisunipress.bsky.social offers 50% off right now: bristoluniversitypress.co.uk/transport-tr...
I’m not in a rush to incorporate AI in my research, but can appreciate Perplexity as a replacement for search. The simple query on statistics was clear and referenced with good sources.
June 27, 2025 at 8:55 PM
I’m not in a rush to incorporate AI in my research, but can appreciate Perplexity as a replacement for search. The simple query on statistics was clear and referenced with good sources.
Calmer streets are where this design really shines, here as a shoulder that can also serve pedestrians. That’s a money saver when you can’t get a sidewalk in. But I wanna look at other issues like safety over time.
April 18, 2025 at 4:04 AM
Calmer streets are where this design really shines, here as a shoulder that can also serve pedestrians. That’s a money saver when you can’t get a sidewalk in. But I wanna look at other issues like safety over time.
The bike lane turns into a buffer that is also helpful for car pedestrian movements.
April 18, 2025 at 4:04 AM
The bike lane turns into a buffer that is also helpful for car pedestrian movements.
The NE 43rd Ave between NE Tillamook St and NE Sandy Blvd was full of more cars than bikes, but I could still negotiate space through the bike lane.‘Negotiate’ is key, as the main aspect of this infrastructure is the middle lane is flexible for vehicles going either direction.
April 18, 2025 at 4:04 AM
The NE 43rd Ave between NE Tillamook St and NE Sandy Blvd was full of more cars than bikes, but I could still negotiate space through the bike lane.‘Negotiate’ is key, as the main aspect of this infrastructure is the middle lane is flexible for vehicles going either direction.
I biked through Portland’s ‘advisory bike lanes’ today, to see how motorists and bicyclists negotiated space on these pilot projects.
@pbotinfo.bsky.social has a useful page on the projects at www.portland.gov/transportati...
@pbotinfo.bsky.social has a useful page on the projects at www.portland.gov/transportati...
April 18, 2025 at 4:04 AM
I biked through Portland’s ‘advisory bike lanes’ today, to see how motorists and bicyclists negotiated space on these pilot projects.
@pbotinfo.bsky.social has a useful page on the projects at www.portland.gov/transportati...
@pbotinfo.bsky.social has a useful page on the projects at www.portland.gov/transportati...
Shout out to the e-scooter rider captured on Streetview in Portland’s NW hills. I see your safety gear, and appreciate your commitment. maps.app.goo.gl/zN2JK7QN1VQ6...
April 10, 2025 at 3:53 AM
Shout out to the e-scooter rider captured on Streetview in Portland’s NW hills. I see your safety gear, and appreciate your commitment. maps.app.goo.gl/zN2JK7QN1VQ6...
Austin, Texas is a different situation, but still most capital is outside the state, and growth is fast content.kvue.com/photo/2017/0...
March 12, 2025 at 4:28 AM
Austin, Texas is a different situation, but still most capital is outside the state, and growth is fast content.kvue.com/photo/2017/0...
Trucks parking on sidewalks are out of control in my neighborhood.
January 17, 2025 at 5:53 AM
Trucks parking on sidewalks are out of control in my neighborhood.
Texas earns a 30/50 rank in @bikeleague.bsky.social 2024 report card (bikeleague.org/wp-content/u...).
Zinger: “Texas spends a very low amount of federal funding on biking and walking per capita-less than the cost of one Whataburger Jr. annually per person.”
Zinger: “Texas spends a very low amount of federal funding on biking and walking per capita-less than the cost of one Whataburger Jr. annually per person.”
December 12, 2024 at 10:34 PM
Texas earns a 30/50 rank in @bikeleague.bsky.social 2024 report card (bikeleague.org/wp-content/u...).
Zinger: “Texas spends a very low amount of federal funding on biking and walking per capita-less than the cost of one Whataburger Jr. annually per person.”
Zinger: “Texas spends a very low amount of federal funding on biking and walking per capita-less than the cost of one Whataburger Jr. annually per person.”
LOVE seeing all of the new folks here, many of whom I miss from the good days of Twitter and so many new faces! I’m not keeping up with all the recent follows—please interact and I’ll likely follow you too.
November 16, 2024 at 12:18 AM
LOVE seeing all of the new folks here, many of whom I miss from the good days of Twitter and so many new faces! I’m not keeping up with all the recent follows—please interact and I’ll likely follow you too.
Portland, OR’s Fixing Our Streets $.10/gal gas tax funds a lot of needed projects, guided by an Oversight Committee (I am a member). www.portland.gov/transportati... Lack of funding is cited as why cities can’t make safer, livable streets; but it doesn’t have to be that way.
November 12, 2024 at 3:06 AM
Portland, OR’s Fixing Our Streets $.10/gal gas tax funds a lot of needed projects, guided by an Oversight Committee (I am a member). www.portland.gov/transportati... Lack of funding is cited as why cities can’t make safer, livable streets; but it doesn’t have to be that way.
It’s getting cool in Portland’s Forest Park. How are you preparing for fall?
August 28, 2024 at 4:31 AM
It’s getting cool in Portland’s Forest Park. How are you preparing for fall?
Be sure to water your asphalt. Many homeowners neglect in the early spring when roads need municipal water the most. satire.
February 28, 2024 at 3:10 PM
Be sure to water your asphalt. Many homeowners neglect in the early spring when roads need municipal water the most. satire.
The proposed expansion of I-35 in Austin, TX has triggered another lawsuit from local plaintiffs, alleging TxDOT violated NEPA, is taking parkland, and other issues.KUT's Nathan Bernier has the story (www.kut.org/transportati...) and complaint:
www.documentcloud.org/documents/24...
www.documentcloud.org/documents/24...
February 21, 2024 at 6:02 PM
The proposed expansion of I-35 in Austin, TX has triggered another lawsuit from local plaintiffs, alleging TxDOT violated NEPA, is taking parkland, and other issues.KUT's Nathan Bernier has the story (www.kut.org/transportati...) and complaint:
www.documentcloud.org/documents/24...
www.documentcloud.org/documents/24...
Achille Mbembe’s ‘Brutalism’ is available Jan. 9 in English translation, but you can get an intro chapter here free:
brittlepaper.com/2023/12/came...
Mbembe uses the architectural perspective to critique a totalizing global capitalism, towards an Afro-diasporic repair of community…
brittlepaper.com/2023/12/came...
Mbembe uses the architectural perspective to critique a totalizing global capitalism, towards an Afro-diasporic repair of community…
January 1, 2024 at 4:15 PM
Achille Mbembe’s ‘Brutalism’ is available Jan. 9 in English translation, but you can get an intro chapter here free:
brittlepaper.com/2023/12/came...
Mbembe uses the architectural perspective to critique a totalizing global capitalism, towards an Afro-diasporic repair of community…
brittlepaper.com/2023/12/came...
Mbembe uses the architectural perspective to critique a totalizing global capitalism, towards an Afro-diasporic repair of community…
Is gentrification by 🚲 share and infrastructure really a thing?
A review of research and empirical results from Taipei shows transit improvements can gentrify, but “evidence does not support the hypothesis that equipping bike infrastructure catalyzes gentrification”
(doi.org/10.1016/j.tr...).
A review of research and empirical results from Taipei shows transit improvements can gentrify, but “evidence does not support the hypothesis that equipping bike infrastructure catalyzes gentrification”
(doi.org/10.1016/j.tr...).
November 10, 2023 at 4:36 PM
Is gentrification by 🚲 share and infrastructure really a thing?
A review of research and empirical results from Taipei shows transit improvements can gentrify, but “evidence does not support the hypothesis that equipping bike infrastructure catalyzes gentrification”
(doi.org/10.1016/j.tr...).
A review of research and empirical results from Taipei shows transit improvements can gentrify, but “evidence does not support the hypothesis that equipping bike infrastructure catalyzes gentrification”
(doi.org/10.1016/j.tr...).
8/10 ratemyroad sarcasm
Converting the single sidewalk to a driving lane would increase level of service in this school zone.
Converting the single sidewalk to a driving lane would increase level of service in this school zone.
October 13, 2023 at 2:49 PM
8/10 ratemyroad sarcasm
Converting the single sidewalk to a driving lane would increase level of service in this school zone.
Converting the single sidewalk to a driving lane would increase level of service in this school zone.
Transportation planners, policymakers, modelers, and financiers know about high-occupancy toll (HOT) lanes.
DeCorla-Souza has proposed "HOTTER lanes: lanes reserved for High-Occupancy, Transit, and Tolled vehicles on Existing lanes with Rewards for those who share rides"
doi.org/10.1080/0194...
DeCorla-Souza has proposed "HOTTER lanes: lanes reserved for High-Occupancy, Transit, and Tolled vehicles on Existing lanes with Rewards for those who share rides"
doi.org/10.1080/0194...
October 7, 2023 at 8:44 PM
Transportation planners, policymakers, modelers, and financiers know about high-occupancy toll (HOT) lanes.
DeCorla-Souza has proposed "HOTTER lanes: lanes reserved for High-Occupancy, Transit, and Tolled vehicles on Existing lanes with Rewards for those who share rides"
doi.org/10.1080/0194...
DeCorla-Souza has proposed "HOTTER lanes: lanes reserved for High-Occupancy, Transit, and Tolled vehicles on Existing lanes with Rewards for those who share rides"
doi.org/10.1080/0194...
Here's a smart academic email salutation:
"There will be pizza."
"There will be pizza."
October 2, 2023 at 9:14 PM
Here's a smart academic email salutation:
"There will be pizza."
"There will be pizza."
Is your street built too wide?
Count the number of ducks lounging to find out.
Count the number of ducks lounging to find out.
September 29, 2023 at 5:13 PM
Is your street built too wide?
Count the number of ducks lounging to find out.
Count the number of ducks lounging to find out.
It’s not hard to do well.
#waybackWednesday to Better Naito in Portland summer 2022.
#waybackWednesday to Better Naito in Portland summer 2022.
September 28, 2023 at 12:28 AM
It’s not hard to do well.
#waybackWednesday to Better Naito in Portland summer 2022.
#waybackWednesday to Better Naito in Portland summer 2022.