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One City Saved $5M by Routing School Buses with an Algorithm

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Re: One City Saved $5M by Routing School Buses with an Algorithm

#121
post #70

Earlier quoted context omitted.

Yes, as a European, I’m always amazed at how far south the northern US and even southern Canada really is. With that said, those are latitudes, not longitudes.

>>With that said, those are latitudes, not longitudes. Someone once told be a simple way to remember the difference. Longitude and latitude was first used be Greeks to travel the Mediterranean ocean (not sure if that is true, but helps with remembering); The Mediterranean ocean is long from East to West, so moving in the long direction changes the longitude.

My middle school geography teacher had a more memorable (to me) approach: lat = fat, so if you think of a fat person, their belt is the equator and latitude lines run parallel to it. Long = long hair, so if the Earth is positioned north-up, the hair (longitude lines) runs from top to bottom.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#122

Interesting - so is it "a thing" in the US that the city runs a dedicated bus service for all schools/students? Quite a surprise for me considering how poor people say public transport is in general in the US? In the UK some schools run their own bus things (in the same way that Goolge, Facebook et al do in San Francisco), but most of the other schools just get by with the public buses. There is often some coordinati…

Generally speaking, US school systems consist of separate elementary, middle school/junior high, and (senior) high schools with staggered start and end times for the school day to accommodate buses. For example, back in high school I think the actual school day started around 7am or maybe 7:15am or so. I'd catch the bus at around ~6:30am as I lived towards the end of my bus route; some kids would be up earlier. The b…

How silly, I rode the city bus alone around 9, and this was before cell phones.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#123
post #39

Earlier quoted context omitted.

Boston is different from this in a whole variety of ways. 1) Americans just in general tend to drive their kids to school dues to fear of child abductions and related ever-present paranoia. 2) Boston's transportation system is broken on just about every levels. The street organization is irrational, derived haphazardly from ad-hoc pre-auto paths. The public transit system was also built in an ad-hoc and is at level w…

> 1) Americans just in general tend to drive their kids to school dues to fear of child abductions and related ever-present paranoia. Is it true that in some places this paranoia has gotten so far that you’ll get reported to child services if you let your kids walk to school? > 3) Boston's weather is also miserable - the place is at just latitude so that wet, 30 degree weather prevails in winter, giving freezing rain…

> Is it true that in some places this paranoia has gotten so far that you’ll get reported to child services if you let your kids walk to school?

Not really. There have been cases of this (well, with young children walking with older siblings to a neighborhood playground), but they are rare and sensationalized.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#124

Earlier quoted context omitted.

For elementary students apparently “Hundreds of families were facing a 9:30 to 7:15 a.m. shift.” That’s a significant change in wake up time. Yeah, I’m not keen on that. It’s a non-starter.

It's a change between years, and students moving to high school are already facing the exact same changes. The disparity can't be a non-starter because it already existed. Those early hours exist. Someone has to take them (without doubling the bus fleet size). And it's better for the students if they have the early hours in elementary and not in high school.

Rather than penalise subsets of people with early starts, I would rather everyone pay marginally more in taxes for more buses.

Also what if your family has both teenagers and preteens? In my family we drove, so the schedule was based on when my parents had to go to work. I’d often arrive at school when the library opened or just before, which is a good hour before when classes started. Then again, my school experience wasn’t in the US, and schools started 8:30am / 8:45am consistently across the city.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#125
post #36

Earlier quoted context omitted.

Nothing special to see from an European point of view...

Huh? Is Boston not the classic car-oriented USA city?

No... I've never took my car into Boston when I've visited, I've always dumped the car at the train station.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#126

“After it was unveiled parents loudly objected to the proposal. Less than a month later, the district repealed the proposed new school start times. As Dimitris Bertsimas, a professor who led the MIT team, pointed out in a presentation about the solution, those who favored the status quo had the most to lose. “When your kids are affected negatively, it is hard to see the big picture,” he said.” Joi Ito wrote on this h…

>Optimizing the algorithm for greater “equity" also meant many of the planned changes were "biased" against families with privilege.

I mean maybe but measuring that by the skin color of those protesting is... not a good method. Of course people marching on City Hall or showing up at schoolboard meetings are going to be the disproportionately privileged, they're the people who have the time for that sort of thing. But even there I'm a bit skeptical, take a look at this:

>Parent Antonia Rodriguez after a fiery address. She says of her and fellow parents, “We don’t have careers; we have jobs!... We’re laborers!” And that makes it hard to handle early starts and early dismissals.

or this video just below:

https://twitter.com/jmlarkin/status/941104843137064960

which gets to the main root of the opposition which was drastically earlier start and end times for elementary school students, two hours earlier in some cases.

>But for those who can’t stagger working hours — specifically single parents or families who don’t have any wiggle room on working hours — kids often see themselves to bus stops in the morning, then wait an hour or so after school, alone, until parents return. I see it every day.

>Under the new start times, and therefore early end times, these kids will be spending up to four hours home alone every day.

>Let’s not sugarcoat: After-school care is for financially advantaged families. Costs vary, but for two children at the YMCA in West Roxbury, after-school care from 3:25 p.m. until 6 p.m. is more than $700 per month (the cost would naturally go up with the extension of hours needed), plus the yearly membership cost of the YMCA (currently $90 per family).

...

>And for what? So Boston Public School can save a little in transportation expenses. And while they save, families will find themselves in increasingly precarious financial straits.

https://www.wbur.org/cognoscenti/2017/12/12/boston-public-sc...

Or this analysis from the Boston NAACP, the Lawyers’ Committee for Civil Rights and Economic Justice, and the East Boston Ecumenical Community Council:

>This ignores the fact that parents of color are disproportionately in lower-wage jobs, and are less likely to have the flexibility needed to build their schedules around a school day that ends at 1:15 or 1:55, let alone pay for any resulting need in after school care

https://www.boston.com/news/education/2017/12/16/naacp-lette...

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Now it's clear that BPS used the MIT students here as a tool, a coating of algorithmic sophistication over a plan they already had, but it strikes me a bit poorly to see those students using 'actually we did everything right, it's just rich parents who stopped us' as a scapegoat.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#127
post #70

Earlier quoted context omitted.

Yes, as a European, I’m always amazed at how far south the northern US and even southern Canada really is. With that said, those are latitudes, not longitudes.

>>With that said, those are latitudes, not longitudes. Someone once told be a simple way to remember the difference. Longitude and latitude was first used be Greeks to travel the Mediterranean ocean (not sure if that is true, but helps with remembering); The Mediterranean ocean is long from East to West, so moving in the long direction changes the longitude.

I was taught think "longitude = long hair."

Re: One City Saved $5M by Routing School Buses with an Algorithm

#128
post #30
post #7

Earlier quoted context omitted.

These are often done by hand, I'm really not surprised.

You can also see this effect in Google and Apple maps: There may be three ways to get from one neighborhood to another, and the locals know that one is faster, safer, or both at certain times of day. I have this argument with a couple of friends who don't understand why I use different routes at different times of day and specifically why I don't use their route, when they've never been in that part of town during ru…

Waze helps a lot here, time of day and realtime user data is pretty critical.

Re: One City Saved $5M by Routing School Buses with an Algorithm

#129
post #89

Earlier quoted context omitted.

They're usually part-timers or neighborhood parents volunteering.

I have never heard of a bus driver being a volunteer position, is that something that happens near you? And, if so, is it a public school district?

It was in a school district that had two high schools, and my high school had 2,000 students. There were something like 15 elementary schools at the time. Yes, it is a public school district. Is that not normal?

Re: One City Saved $5M by Routing School Buses with an Algorithm

#130

Earlier quoted context omitted.

never heard of that. At least in California there are strict requirements and qualifications to be able to transport children on a school bus

Driving a school bus requires a CDL in every state.

If they enforced it, then it must not be that hard to get. It looks like you just need to take a test to get one.
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