Category: Safety

Department of Road Diets: the carbon tax

September 16, 2013 / / 6 Comments

Grand Avenue over the Kennedy Expressway. Its four lanes look like this – empty – most of the day. But then there are times of the day where people who bike, take the bus, and drive all need to “share the road”. That failed strategy has led to increased road rage, slow transit, and dead bicyclists. Time to put roads like this on a diet. 

My friend Brandon sent me an article about the one-page solution to (mitigating) climate change in the United States that NPR posted this summer.

But Henry Jacoby, an economist at MIT’s business school, says there’s really just one thing you need to do to solve the problem: Tax carbon emissions.

“If you let the economists write the legislation,” Jacoby says, “it could be quite simple.” He says he could fit the whole bill on one page.

Basically, Jacoby would tax fossil fuels in proportion to the amount of carbon they release. That would make coal, oil and natural gas more expensive. That’s it; that’s the whole plan.

This new carbon tax would support different infrastructure construction and expanded government agencies with which to manage it. It would support a Department of Road Diets. Road diets are projects that reduce the number of lanes for cars on a roadway, either by reducing the width of the roadway, or converting the general purpose lanes to new uses, like quickly moving buses or giving bicycles dedicated space.

See, in the carbon taxed future, people will want to drive less and use more efficient modes of transportation like transit and bicycles. And those uses will need their own space because the status quo in our cities (except the ones in the Netherlands) of having each mode compete for the same space isn’t working. It results in frustration, delay, and death.

Enter the Department of Road Diets. We have millions of miles of roadways that will need to go on diets so a department dedicated to such transformation would be useful. The agency would be in charge of finding too-wide roads and systematically putting them on diets, I mean, changing their cross section to less carbon-intensive uses.

Dutch biking is better than all other kinds

August 5, 2013 / / 0 Comments

Yonah Freemark, famous person behind The Transport Politic and now a semi-famous person at Metropolitan Planning Council (shut down the Illiana, Yonah!), needed a ride from the Damen Blue Line station for a special Vancetour of the Bloomingdale Trail. The Dutch way of biking is extremely social, both because of the way bicycles are built and the way the infrastructure is built. That style is rare in America, and even downright anti-social and hostile in many places. For starters, there’s not enough room to ride side-by-side (in Chicago it’s illegal outside of too-narrow bike lanes).

The WorkCycles Fr8, my main bicycle, is built like a tank. Some may call it the Mercedes G-Class SUV of bicycles. I called it a Cadillac to some guy outside City Hall – referring to how comfortably it rides – and he said “They suck, it’s a Mercedes.” (He was German and I don’t think either of us knew any Dutch car manufacturers.)

Thank you, Ryan Lakes, for the photos.

Revealing driver behavior on Clark Street with a radar gun

July 30, 2013 / / 2 Comments

People prefer to cross Clark Street at Menomenee Street in groups of unacquainted individuals.

This is a more detailed post of the one at Streetsblog Chicago.

On the overcast morning of Friday, May 4, 2012, I recorded the speeds of 412 cars at four locations along Clark Street in Old Town and Lincoln Park for 15 minutes at each location. I missed counting the speeds of 42 cars. The embedded map shows the locations and some basic statistics.

What did I find? There’s a relationship between street width and the speed people drive. The highest speeds were found on the widest portions, and the lowest speeds on the narrowest portions. However, this basic study is far from scientific. A better study would record the locations simultaneously (necessitating 4 radar guns), calibrated equipment, consistent training for the researchers on data collection methods, a longer recording duration, and comparison to a control street that had a uniform width at four locations.


View Radar gun places on Clark Street in a larger map

1. Southbound Clark Street at Germania Place

My assistant and I set up the radar gun and camera immediately south of Sandburg Terrace and pointed the radar gun at people driving southbound on Clark Street between a row of parked cars at the concrete median (pedestrian refuge island). Classes would start soon at the Latin School on the east side of Clark Street. Compliance with state law requiring drivers to stop for pedestrians in the crosswalk was weak, to say the least, but compliance wasn’t explicitly measured.

  • Average speed: 17.21 miles per hour (MPH)
  • Maximum speed: 30 MPH
  • Cars measured: 151
  • Speed limit: 30 MPH
  • Drivers exceeding the speed limit: 0
  • Width: 224 inches (from west curb to pedestrian refuge island)
  • Effective width: 140 inches (excludes parking by subtracting 7 feet)
  • Crashes: 35, of which 4 were bicycle, and 3 were pedestrian.

Only one car-car crash (actually a 3 car crash) produced an injury. What’s interesting about this location is that in a lot of the crashes, the cars were traveling in the same direction. There’s a lot of school drop off and pick up activity here for Latin School of Chicago students, so it could be that many people are pulling away from the curb to merge into traffic and collide.

2. Northbound Clark Street at Menomenee Street

  • Average speed: 30.83 miles per hour (MPH)
  • Maximum speed: 50 MPH
  • Cars measured: 121
  • Speed limit: 30 MPH
  • Drivers exceeding the speed limit: 53.72%
  • Width: 395 inches (from east curb to dividing line). This includes the parking lane but no cars were parked within 50 feet, north and south, of the measurement location.
  • Crashes: 20, of which 2 were bicycle, and 1 were pedestrian. Many of the non-bike and non-ped crashes involved a parked car or taxi. The only injuries experienced were by the 2 cyclists and 1 pedestrian.

3. Northbound Clark Street at Lincoln Park West

We stood on the “pie” (traffic island) that separates northbound Clark Street traffic from northbound Lincoln Park West traffic to measure the traffic driving on Clark Street between the pie and the concrete median separating it from southbound Clark Street.

  • Average speed: 25.60 miles per hour (MPH)
  • Maximum speed: 40 MPH
  • Cars measured: 58
  • Speed limit: 30 MPH
  • Drivers exceeding the speed limit: 27.59%
  • Width: 252 inches (from concrete median curb to west curb on the pie)
  • Crashes: 4, of which 1 was bicycle, and 2 were pedestrian.

4. Northbound Clark Street between Lincoln Park West and Dickens Avenue

This location is 125 feet north of the previous location.

  • Average speed: 22.54 miles per hour (MPH)
  • Maximum speed: 35 MPH
  • Cars measured: 58
  • Speed limit: 30 MPH
  • Drivers exceeding the speed limit: 2.44%
  • Width: 264 inches (from east curb to dividing line).
  • Effective width: 180 inches (excludes parking by subtracting 7 feet)
  • Crashes: 0

Me measuring speeding drivers on Clark Street with the speed gun, my clipboard and paper, and a GoPro camera to record the speeding drivers and the results on the speed gun. 

Bike Walk Lincoln Park’s proposal

In 2011, Michelle Stenzel and Michael of Bike Walk Lincoln Park published a document to “Make Clark a Liveable Street“. The first two pages show an aerial photo of the same section of Clark Street where I measured automobile speeds, North Avenue and Armitage Avenue. On the first page, existing conditions are laid out. The second graphic shows proposed improvements.

At Menomonee Street, measurement location 2, the document says “pedestrians must cross 6 lanes with no safe haven”, a width of just under 66 feet. In the later pages, the first existing condition is blatant: “Wide lanes of auto traffic moving at speeds in excess of the speed limit”. My analysis in May demonstrates this.

How does BikeWalk Lincoln Park propose to “transform this stretch from a car-oriented ‘super-highway’ to a people-oriented liveable street”? By installing protected bike lanes, putting the street on a diet, and installing new and well-marked crosswalks among other ideas.

Width and speed summary

Ordered by location:

  1. 224/140 inches. 0% of drivers exceeded 30 MPH speed limit
  2. 395/395 inches. 53.72% of drivers exceeded 30 MPH speed limit
  3. 252/252 inches. 27.59% of drivers exceeded 30 MPH speed limit
  4. 264/180 inches. 2.44% of drivers exceeded 30 MPH speed limit

Ordered from narrowest to widest to see how width relates to speed:

  • 224/140 inches. 0% of drivers exceeded 30 MPH speed limit
  • 264/180 inches. 2.44% of drivers exceeded 30 MPH speed limit
  • 252/252 inches. 27.59% of drivers exceeded 30 MPH speed limit
  • 395/395 inches. 53.72% of drivers exceeded 30 MPH speed limit

Notes

Crash data is within 100 feet to avoid the overlap of the final two locations, which were 125 feet apart. Crash data comes from the Illinois Department of Transportation for 2005-2010. The Bushnell Velocity Speed Gun was borrowed for this analysis. The radar gun was filmed to show a speeding car and its speed simultaneously. The video below shows a driver traveling at 50 MPH in a Children’s Safety Zone (as it’s within 1/8 mile of a park, Lincoln Park, making it eligible for automated speed enforcement).

Curiously, no traffic counts have been collected on Clark Street near any of the count locations.

View the video on Vimeo.

Screenshot of traffic count website. Go to the Traffic Count Database System and search for “1700 N Clark Street, Chicago, IL” in the map. 

Shaming dangerous drivers, like they did in Bogotá

June 27, 2013 / / 0 Comments

My friend D.D. said:

Oh, and the documentary i mentioned to you about Bogotá is on YouTube now
Cities on Speed: Bogotá Change
My favorite initiative Antanas Mockus started was he hired clowns to stand in intersections and make fun of drivers that disobeyed traffic laws

His reasoning was that Colombians care more about looking foolish than being fined.

I think something like that could work here:

Like, every day video an example of terrible driving and shame the person. Maybe follow them home, ask them what was so important that they had to risk the safety of other. Then they’ll say “well, i wanted to watch game of thrones” and look foolish.

Updating street life on Milwaukee Avenue

May 19, 2013 / / 16 Comments

Photo of the new on-street bike parking corral at Revolution Brewing (2323 N Milwaukee Avenue) in Logan Square, less than 10 hours after being installed. 

First, Revolution Brewing now has 20 (or more) new bike parking spaces in what used to hold about two cars. Kudos to that awesome restaurant and brewery for working through the arduous process with the Chicago Department of Transportation and Alderman Moreno (who likely helped with the transfer of the metered car parking spaces). CDOT’s Scott Kubly admitted to having a bad process for businesses who want to install their own bike parking.

Wicker Park-Bucktown SSA had issues after the first round of bike racks we* installed in 2011. We donated the bike racks to the city for them to install at mutually agreeable locations at which they marked the spot for the contractor. We wanted to repeat the process in 2012 and bought the racks but they couldn’t be installed because CDOT, accepting the racks as donations in 2011 said that that wasn’t the right process and couldn’t do it again. So they had to figure out a new process. The racks were manufactured and delivered in 2012 to CDOT but weren’t installed until April 2013. Before the fix came in April 2013, we were going to have to go through the most basic process of buying a permit for each one (for $50) and then pay to have them installed ourselves.

The fix was great for the SSA, and I’m glad CDOT was able to make it happen: they got IDOT to amend the existing bike parking contract to allow the contractor to install non-city-paid-for bike racks. (This was the issue for the 2011 racks.)

Second, I’m proposing that private automobile traffic be banned on Milwaukee Avenue from Paulina Avenue to Damen Avenue. It would be better for the residents, and the businesses, and would encourage more cycling in the neighborhood, as well as surrounding neighborhoods having residents who would bike on Milwaukee Avenue if it was safer (there’s a big dooring and general crash issue). I reference the single, car-free block on Nørrebrogade in Nørrebro, Copenhagen, Denmark. One single block (plus bikeway and pedestrian-way improvements on the other blocks) and car traffic goes down but bus and bike traffic go up.

What Milwaukee Avenue looks like every afternoon. 

What Milwaukee Avenue could look like every afternoon. 

* I volunteer on the transportation committee, since about May 2011.