Category: Information

Illinois updates its affordable housing enforcement statute to take effect in 2026

December 15, 2023 / / 0 Comments

Illinois has a statute that requires every covered municipality to have an affordable housing stock of 10 percent relative to its total housing stock. The Affordable Housing Planning and Appeal Act exempts only municipalities with population of under 1,000, and those “in which at least 10% of its total year-round housing units are affordable, as determined by the Illinois Housing Development Authority”.

IHDA updates a list of non-exempt municipalities – those not achieving the 10 percent standard – every five years, which it last did in December 2023 (the list of non-exempt local governments, or NELGs, and the full list of all municipalities).

List of 44 non-exempt municipalities ordered by lowest percentage of housing stock which is affordable.

Glenview is one of the non-exempt municipalities and this year has “had trouble” approving new housing. Although neither proposed development included affordable housing, to my knowledge, the developer of one proposal said that the project rents would be less than the median; my guess is that most rentals in Glenview are not other apartments but whole houses.

I’ve been keeping a list, on Twitter, of other municipalities that have “had trouble” approving new housing.

One of the updates in the AHPAA adopted in 2023 is that the definition of who can appeal a municipality’s rejection of a proposed affordable housing development has been expanded to, basically, include someone who could have lived in the development if it was built.

The revised definition for appellants also includes housing advocacy organizations that have an overlapping geographic focus. This new appellant definition takes effect on January 1, 2026.

IHDA’s FAQ answer to who is an appellant and can appeal a rejected affordable housing development proposal.

If you know of an Illinois municipality that has voted to reject an affordable housing development, or has through some kind of delay or inaction effectively rejected an affordable housing development, please let me know!

How to map where I traveled when I went to Gorinchem, NL

December 6, 2023 / / 0 Comments

On Monday, December 4, 2023, I wanted to ride a line in the Netherlands that I hadn’t yet, which is called the “MerwedeLingelijn” and goes between Dordrecht and Geldermalsen. In the NS journey planner database it’s called “Stoptrein” which distinguishes it from “Sprinter” and “Intercity”. Those names distinguish the service types on the Dutch railway network. (This particular Stoptrein is also a diesel-electric trainset.)

From Rotterdam, where I was staying, it would require at least one transfer to get to Gorinchem. But I wanted to stop in Utrecht to say hi to a friend during his work break – this meant there would be two transfers.

Here’s the itinerary I traveled on Monday

  • Rotterdam Centraal to Utrecht Centraal via Gouda, Intercity (half-hourly service) – 55 km
  • Utrecht Centraal to Geldermalsen, Sprinter (10-20 minute service) – 26 km
  • Geldermalsen to Gorinchem, Stoptrein (half-hourly service) – 27 km
  • [lunch and walk in Gorinchem, distance not recorded]
  • Gorinchem to Dordrecht, Stoptrein (quarter-hourly service) – 24 km
  • Dordrecht to Rotterdam, Waterbus (hourly service) – 21 km

How I drew the map

I wasn’t about to draw the routes by hand (although I did record the Waterbus ride on Strava as a “sail”) so I grabbed the data from OpenStreetMap.

If you want data in bulk from OpenStreetMap a common way to get it is from the HotOSM export tool. But I wanted specific transit routes, for which I could find the “way” IDs and export only those. For that I used Overpass Turbo and wrote the following query:

[out:json][timeout:25];
// gather results
rel(id:324888,13060594,5301520,2785504);
way(r);
// print results
out geom;

Notes

Frequencies refer to the pattern in the hour I used the service. The itinerary doesn’t include a Rotterdam Metro ride or the roundtrip bike ride from the Schiebroek neighborhood to Rotterdam Centraal).

Starting on December 10, the NS (Dutch national railway operator) is adding over 1,800 train services each week.

Reading “climate-fi”

September 7, 2023 / / 0 Comments

Climate-fi is a genre of novels in which the effects of climate change are central to the plot. I have become more of a fan of climate fiction commensurate with the frequency of books being published.

The first climate-fi story I read – before I knew the genre name – was “The Water Knife” by Paolo Bacigalupi. That came out in 2015 and it wasn’t until 2020 that I picked up the genre again.

Here are books I recommend:

  • The Water Knife explores the realistic issues of freshwater supply and who has the right to water sources in the Southwest. This is especially relevant to problems and discussions today, given that people in Arizona are having to buy water from the private market, governments are not approving proposed developments unless they come with new water sources, the state continues to usurp water from upstream freshwater sources, land use is single-use and sprawling, and historic water rights are still a source of conflict.
  • Parable of the Sower, by Octavia Butler. The protagonist and her family live in a tenuous gated community in the near future of a United States ravaged by climate change and other economic and political upheavals. She eventually travels towards a place to establish a better community based on a religion she invents.
  • Ministry for the Future, by Kim Stanley Robinson, opens in the “almost present” day describing a heat wave in South Asia during which the wet bulb temperature challenges the body’s ability to cool itself and many people die. A climate terrorist group forms to force the world to adapt to and mitigate climate change globally otherwise the poorest people will suffer the most during the crisis. (KSR personally sees cities as a climate change solution.)
  • Termination Shock by Neal Stephenson opens with a riveting story of the Dutch queen’s plane crashing in Texas and then winds around the world narrating seemingly unconnected climate change-related events. The story then focuses on how shooting sulfur into the atmosphere has an effect on how much energy of the sun reaches Earth, something that actually happened last year.

What climate fiction books and stories do you recommend?

“Termination Shock” by Neal Stephenson
photo of Hadiya Pendleton Park, seen from the 43rd Green Line station platform.

Traffic calming around Chicago schools and parks

July 26, 2023 / / 0 Comments

Reducing the number and speed of automobiles near schools and parks is a proven way to reduce the number of traffic crashes involving children, part of a practice known as “traffic calming”. In Chicago a key way to do that has been to “cul-de-sac” (which I’m using as a verb) a street to prevent through traffic (reducing the number) and preventing speeding (reducing the speed).

My study of this was inspired by the above tweet, where the person is accurate when they say, “it works with any street”. Indeed: Full access to the school or park and to every property on the block is maintained, but drivers are not able to go through while pedestrians and bicyclists can (another practice called “modal filtering“).

My favorite example in Chicago is Hadiya Pendleton Park, at 4345 S Calumet Ave. This project created two mid-block cul-de-sacs and a park in the middle of a block, using vacant city-owned land on both sides. Creating new open space is a common corresponding outcome of the cul-de-sac application, which is what occurred at Funston Elementary School (see the before and after aerial photos below).

two black and white aerial photos taken of Funston Elementary School, one in 1998 showing a 4-way intersection of McLean Ave and Central Park Ave and one in 2003 showing a cul-de-sac on McLean Ave west of the school and landscaped area between the cul-de-sac and the three-way intersection of McLean and Central Park.

Through Twitter I solicited additional examples of where the city has created traffic calming near schools and parks using cul-de-sacs. Examples were submitted by Roland, Emily (who mentioned Funston), Matt, Steven, and another tweeter.

Using OpenStreetMap, Overpass Query Language, and Overpass Turbo, we can find all of the schools and parks that are within a specified distance of a cul-de-sac. It turns out there are 153 schools and parks in Chicago that are within 150 feet of a cul-de-sac. (This considers only schools, parks, and cul-de-sacs, tagged as “turning circles”, currently mapped in OSM, and I have not verified each of the 153 instances.)

Map showing parks, schools, and adjacent cul-de-sacs, the results of the Overpass Turbo query.
Map showing parks, schools, and adjacent cul-de-sacs, the results of the Overpass Turbo query. An inset map shows a zoomed in portion of the map to illustrate the different types of features captured in the Overpass Turbo query (specifically it shows Graham Elementary School and McInerney Park).

The query below will find all of the cul-de-sacs (mapped as “turning circles” in OSM parlance) that are in Chicago, all of the schools and parks in Chicago, and then all of the two categories of features that are within 45 meters of each other. (Run the query and show the map, which will always grab the latest data.)

/*
example from OSM wiki: https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_API_by_Example
*/
[out:json][timeout:25];
// fetch area “Chicago” to search in
{{geocodeArea:Chicago}}->.searchArea;

// get cul-de-sacs
(
  node["highway"="turning_circle"](area.searchArea);
)->.turning_circles;

// get parks and schools
(
  way["amenity"="school"](area.searchArea);
  way["leisure"="park"](area.searchArea);
)->.schoolsParks;

// find parks and schools near cul-de-sacs
(
  way.schoolsParks(around.turning_circles:45);
)->.matchingSchoolsParks;

// find cul-de-sacs near parks and schools
(
  node.turning_circles(around.schoolsParks:45);
)->.matchingTurningCircles;

// output results to the map
(.matchingSchoolsParks; .matchingTurningCircles;);
out geom;

Read the three other blog posts I’ve written about using Overpass Turbo to quickly sift through and extract desired mapping data from OpenStreetMap.

Get yourself an air purifier

June 27, 2023 / / 0 Comments

The air quality in the Midwest sucks a lot right now, due to smoke coming from forest fires in Canada. You need an air purifier to clean the air inside your home.

I’ll describe what I personally look for in an air purifier and guide you to a couple of models. I can only recommend the one I have, since it’s one of two that I’ve used, but I would rather have a different model.

I use a Coway Airmega 200S. I bought it for about $180. I bought this model because it can cover a large room (my entire studio is about 550 s.f.), has “auto” and “eco” modes, an air quality sensor, and three filters (a washable screen, a charcoal filter to remove odors, and a HEPA filter).

ComEd customers should look for Energy Star-rated air purifiers because there is a $50 rebate. Even if the manufacturer doesn’t specify or show the blue logo, it may still be rated, including the Coway Airmega 200S!

What I look for in an air purifier

  • Auto mode. I want the machine to have a sensor to turn itself on to clean the air when it detects the air is dirty, and to run at the fan speed commensurate with the dirtiness.
  • Eco or sleep mode. This runs the fan at an even slower speed and I use this when I’m not home.
  • Washable screen or pre-filter. This catches larger objects like dirt and hair and presumably prolongs the life of the other filters. It also satiates the desire to clean and know that things are clean after you’ve cleaned them.
  • HEPA filter. This should go without saying. If it doesn’t have this, it shouldn’t be labeled an air purifier.
  • Reasonable filter prices, and available. I am skeptical of the proliferation of identical looking air purifiers on Amazon and their ability to consistently stock replacement filters six months and 12 months from now. I don’t want to be in the position where I’m questioning if a given filter is the right one for my air purifier model.
  • Filtration rate, expressed as CADR (higher numbers are better). There are many ways that air purifier companies will describe this, the most common or first shown being the floor area of a room. The floor area, however, is not a filtration rate. My favorite way is when the manufacturer has a graphic showing how many air changes per hour the air purifier can manage.

In the graphic below, the air purifier was advertised as being able to cover a living area up to 1,837 s.f., which is the size of a four-bedroom apartment, but it could only change the air once per hour, which is too slow to respond to changes in air quality. On the other hand, in a 527 s.f. space, which is about the size of my studio apartment, the air purifier can manage five air changes per hour – I think that’s more than sufficient.

Which air purifier should you get

Note that many air purifiers have a “smart” option, which means they come with wifi and an app. Sometimes these apps connect to Google or Alexa voice assistants. Rarely will they connect with Siri, due to higher Apple licensing or certification costs. This is unnecessary but could be fun to use to track PM2.5 levels in your home if you don’t have a standalone air quality measuring device.

All models listed are Energy Star rated and are ones I would get my for studio apartment

IKEA also sells air purifiers but I haven’t determined if they are Energy Star rated.

ComEd customers can apply for their $50 rebate as soon as they purchase an Energy Star rated air purifier.