Don MacKenzie

Transportation energy, sustainability, and policy.

[Don MacKenzie @DonMacKenzie9]

If all you’re doing is copying sentences, you’re only doing amateur level plagiarism. So much untapped potential.

[Steve McGuire @sfmcguire79]

In defense of Jason Arday, Jason Stanley claims that the “mere overlap of sentences” is not really plagiarism.

[Don MacKenzie @DonMacKenzie9]

@Lib_Development Faregates work well for rail because passengers clear them before waiting on the platform, then board seamlessly. Anything that slows down the boarding process delays passengers already on the bus, AND forces the agency to either run more buses or reduce frequency.

[Don MacKenzie @DonMacKenzie9]

@TSchwimmer55067 @ramez You're conflating climate for San Francisco specifically (famously cool in summer) with AC adoption for the metro area (many hotter parts).

[Don MacKenzie @DonMacKenzie9]

The two duvet thing can really divide a room.

[Marcel @Marcel4EU]

One of the culture shocks that my wife had, was the fact that Germans use separate duvets. I was not prepared for that ever being a topic of discussion but here we are. I think it's superior to use two duvets instead of one.

[Don MacKenzie @DonMacKenzie9]

@humantransit The advice to focus on persuadable voters is correct, but ironic, since it's aimed at activists who will never take it. For them, transit politics isn't about winning. It's about posturing.

[Don MacKenzie @DonMacKenzie9]

@bradleywthomas @humantransit Who says it can only be one or the other of these?

[Don MacKenzie @DonMacKenzie9]

@CaitlinPacific We love it because they love it.

[Jarrett Walker @humantransit]

All over the transit industry, zero-emission bus mandates, like those of @AirResources in Calfornia, are colliding with Buy America requirements that deny US transit agencies access to a competitive bus market. The result is a wave of lousy buses that are impacting service. 1/

[Don MacKenzie @DonMacKenzie9]

Cool analysis of transit accessibility.

[The Exchange @wyk_exchange]

If you stood on Briggate at 8am on a weekday in 1957, and stood there again in 2026, in which year could you reach more of the city in half an hour?

Samuel Bancroft has crunched the numbers. Since the 1950s, Leeds has got bigger - but the city has effectively shrunk.

[Don MacKenzie @DonMacKenzie9]

@WAPolicyGreen

[Don MacKenzie @DonMacKenzie9]

@JSchwarz9 I stayed in a très médiocre @Airbnb in Montreal, and left an honest 4 star review. Host tried bribing me to take it down. When I refused, she faked WhatsApp screenshots to accuse me of extortion. My review and another negative one vanished, along with my trust in the platform.

[Don MacKenzie @DonMacKenzie9]

@FifthCrichton @humantransit How large a system should we build to move 4.7 million people per month? How much should we spend to build and operate it? Absolute ridership is meaningless without scaling to system size, which was @humantransit's point in the first place.

[Don MacKenzie @DonMacKenzie9]

@FifthCrichton @humantransit It’s an incredibly expensive way to move people, unless a lot of people ride it. We should strive to build it where it will be heavily used. I’m a little surprised this is controversial.

[Don MacKenzie @DonMacKenzie9]

@FifthCrichton @humantransit If we’re not trying to serve density with it, we probably shouldn’t be building it.

[Don MacKenzie @DonMacKenzie9]

@keegan_tweets I hope you got that 30 pound box home by throwing it in the bed of your F250. Like a man.

[Don MacKenzie @DonMacKenzie9]

@FifthCrichton @humantransit He literally said in his post that a better metric would be ridership per unit of service provided.

[Don MacKenzie @DonMacKenzie9]

@The_Suburbanist @humantransit Depends on your definition of significant? Vancouver, Boston, DC, Melbourne before living here.

[Don MacKenzie @DonMacKenzie9]

This reads like it was written by someone with little experience of city life, holding court on something he doesn’t understand. If you’re an urbanist who sees the flaw here, maybe consider bringing a bit more humility the next time you fire off a missive about the burbs.

[The Suburbanist @The_Suburbanist]

Cities are largely comprised of four categories of people:

1. Immigrants and/or their children who use cities as waypoints on their way to living in suburbs.

2. Young people who use cities as "adult" playgrounds until they have children and move to suburbs.

3. The chronic underclass.

4. The affluent who can send their kids to private schools, and often insulate themselves in fortress-like buildings.

[Don MacKenzie @DonMacKenzie9]

@humantransit @The_Suburbanist The tweet reads like it was written by someone with little experience of city life, holding court on something he doesn’t understand. If you’re an urbanist who sees the flaw here, maybe consider bringing a bit more humility the next time you fire off a missive about the burbs.

[Don MacKenzie @DonMacKenzie9]

@WAPolicyGreen But what about all the job displacement in the barbed wire industry???