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Jerry Schippa

@jerryschippa.bsky.social
501 followers 479 following 2K posts

Traffic Engineer. Posts mostly about 🚦, 🚌, & 🎲.

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Jerry Schippa @jerryschippa.bsky.social · 08/10/2026
Dont read the comments, dont read the comments, domt read the comments.
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Jerry Schippa @jerryschippa.bsky.social · 04/10/2026
Wyalusing trainspotting
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Jerry Schippa @jerryschippa.bsky.social · 01/10/2026
My favorite go to trick is bloating the side street phase to ensure as long as the signal is green (or for some window of time) ypu'll still get the walk. In this example we shut off vehicle detecgors after 15" but have 26" of time remaining but only for peds.
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Jerry Schippa @jerryschippa.bsky.social · 01/10/2026
If theres a high volume of pedestrians then you likely better off with a recall. NCHRP 969 has a great chart to help guide this decision.
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Jerry Schippa @jerryschippa.bsky.social · 24/09/2026
Godzilla, surprising friend of urbanism.
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Jerry Schippa @jerryschippa.bsky.social · 23/09/2026
9 years ago today was my big 30th birthday party where we cracked open this wheel of cheese. I absolutely recommend having a cheese wheel party.
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Jerry Schippa @jerryschippa.bsky.social · 22/09/2026
Theres a whole other coty in Wisconsin about an hour east of Madison on I94. Who knew?
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Jerry Schippa @jerryschippa.bsky.social · 16/09/2026
Cant stop!
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Jerry Schippa @jerryschippa.bsky.social · 16/09/2026
Game night at Stsrkweather Creek Brewing Currently picking up ladies along the Mississippi River in Mississippi Queen.
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Jerry Schippa @jerryschippa.bsky.social · 11/09/2026
A really cool new TSP operation was added this week for the EB Route A. When the EB bus gets the green at Segoe & Sheboygan, an SCP detector gets turned on at Segoe & Frey, Segoe & University, and University & Midvale. Each doing different things to help the EB bus.
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Jerry Schippa @jerryschippa.bsky.social · 08/09/2026
AI slop...embarassing for ITE.
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Jerry Schippa @jerryschippa.bsky.social · 05/09/2026
Very midwest. At Alpha Brewing Company
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Jerry Schippa @jerryschippa.bsky.social · 02/09/2026
Games from last nights game night. Sleuth In the Year of the Dragon Reaistance Avalon (not shown) And lots of snacks from Korea thanks to someone who recently returned from there.
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Jerry Schippa @jerryschippa.bsky.social · 26/08/2026
17 minutes, had to get on the next bus. This guy...
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Jerry Schippa @jerryschippa.bsky.social · 26/08/2026
We are now 12 minutes into this. Sorry rest of route A...its this guy.
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Jerry Schippa @jerryschippa.bsky.social · 26/08/2026
On todays bus ride...guy standing in front of the bus at a stop wont move, so now we have to wait for the police to come and move him. Been sitting here for 6 minutes. Sorry...TSP cant do anything for this situation.
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Jerry Schippa @jerryschippa.bsky.social · 24/08/2026
Best driver in the field for the past several years puts AI on his car...hits the wall and finishes near the back.
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Jerry Schippa @jerryschippa.bsky.social · 21/08/2026
Me bitterly looking at all the retired tourists thinking how they'll go home and send neighborhood emails about how bikes are ruining their city. Anyways, Mackinac Island (aka Candy Island) was fun.
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Jerry Schippa @jerryschippa.bsky.social · 20/08/2026
@nacto.bsky.social Mackinac Island when?
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Jerry Schippa @jerryschippa.bsky.social · 20/08/2026
I think this is a Killdozer reference in the UP.
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Jerry Schippa @jerryschippa.bsky.social · 17/08/2026
The children yearn for the mines. (Deleware Mine. Deleware, MI)
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Jerry Schippa @jerryschippa.bsky.social · 16/08/2026
Its been many years since Ive last done a beam deflection problem.
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Jerry Schippa @jerryschippa.bsky.social · 16/08/2026
Visiting the places I lived whike at @michigantech.bsky.social Wadsworth Hall Daniel Heights Mills Street Apts Dollar Bay, MI
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Jerry Schippa @jerryschippa.bsky.social · 14/08/2026
🚨David Crowley has swayed the "Dont Fret, Vote Brett" van! 🚨
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Jerry Schippa @jerryschippa.bsky.social · 13/08/2026
Trump supporter in F250 revs his engine at three women in the crosswalk while they have the walk. The thene sing of his people... youtube.com/shorts/ghGMM...
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Jerry Schippa @jerryschippa.bsky.social · 12/08/2026
Had Hong not gone on national TV after the debate, I gaurantee you she wins.
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Jerry Schippa @jerryschippa.bsky.social · 11/08/2026
The C finally getting around the massive queue on Bassett.
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Jerry Schippa @jerryschippa.bsky.social · 11/08/2026
If we dont dig up our forests, China will beat us!
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Jerry Schippa @jerryschippa.bsky.social · 11/08/2026
Lets look at quotes... Tom Tiffany on temporary protection status for Haitians. Guys, he's got jokes.
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Jerry Schippa @jerryschippa.bsky.social · 10/08/2026
What a morning ride on the route A! 25:38 total trip time 133" signal delay (77" of which from one wisdot signal) Three total stops out of 24 signals!
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Jerry Schippa @jerryschippa.bsky.social · 04/08/2026
At this intersection, the offset left turn made it so difficult for trucks to turn that a median pole which was never an issue, was knocked down once a month, forcing the decision to remove it and put the signals on an overhead arm (pole in question is to the picture right)
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Jerry Schippa @jerryschippa.bsky.social · 04/08/2026
One of the big fears is that poles in medians get knocked down, so they're seen as undesirable. But that's partially because we aren't providing enough median space. See this 100' crossing with two useless medians for pedestrians.
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Jerry Schippa @jerryschippa.bsky.social · 04/08/2026
So it's outperformed by signal timing changes. But additionally, often times (not always) this design splits what could have been one refuge island for the traffic signal to take advantage of into two small islands that the signal cannot take advantage of.
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Jerry Schippa @jerryschippa.bsky.social · 04/08/2026
There's a trend in intersection design it seems that puts a median between left turns and thru movements, and sometimes offsets the left turns so there is a small or no median between them and the opposing thru traffic. It's an evolution of the positive offset left turn. But is it good?
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Jerry Schippa @jerryschippa.bsky.social · 02/08/2026
Maquoketa Caves were pretty darn cool. Dont sleep on Eastern Iowa.
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Jerry Schippa @jerryschippa.bsky.social · 01/08/2026
Bike lanes and crosswalk markings in Clinton, IA...and a really cool Dambo troll.
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Jerry Schippa @jerryschippa.bsky.social · 30/07/2026
Not coming back to Wisconsin?
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Jerry Schippa @jerryschippa.bsky.social · 26/07/2026
Last night I spent an embarrasingly pong amount of time trying to figure out this faucet at the Cardinal Bar.
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Jerry Schippa @jerryschippa.bsky.social · 20/07/2026
I dont understsnd RV prices most of the time.
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Jerry Schippa @jerryschippa.bsky.social · 17/07/2026
Crash data even suggests the yield control approach immediately following a signal is more confusing and dangerous than a midblock signal.
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Jerry Schippa @jerryschippa.bsky.social · 17/07/2026
We waited 76" to get our green crossing WB at Anderson & Wright. Not even the longest wait. Counting all NBLT, NB, SB, and EBLT (all conflicting phases) guess how many total vehicles went by? 32.
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Jerry Schippa @jerryschippa.bsky.social · 15/07/2026
Games tonight at Forward Super Lucky Box Hansa Teutonica (not shown) Lewis and Clark
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Jerry Schippa @jerryschippa.bsky.social · 14/07/2026
New bike count station, and calling detector incoming at Blair - John Nolen - Williamson - Wilson (aka the Hairball).
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Jerry Schippa @jerryschippa.bsky.social · 14/07/2026
Lessons learned from BRT...it is an iterative process that you simply cant throw money at once and say "I have TSP now". Much like every traffic signal system. Also, I cant shut up about TSP.
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Jerry Schippa @jerryschippa.bsky.social · 13/07/2026
I think terrace trees should take far more priority than median trees, even if that means mature trees get removed. Ped/bike comfort needs to be more important than aesthetics. We end up living with these designs for 40+ years. That's is my street design/climate disaster hot take.
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Jerry Schippa @jerryschippa.bsky.social · 10/07/2026
The power of phase insertion! The bus phase will always be the next phase with this sequence! My favorite TSP strategy when you have to make a protected/exclusive movement is phase insertion!
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Jerry Schippa @jerryschippa.bsky.social · 10/07/2026
I just watched Hundreds of Beavers...and put that up there with Escanaba in da Moonlight on my Mount Rushmore of cinema.
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Jerry Schippa @jerryschippa.bsky.social · 08/07/2026
Bus runs over a loop detector after the intersection for a far side stop. That loop terminates any TSP operation and calls the ped phase. Signals are just inputs and outputs, get the right inputs, you can get creative with the outputs.
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Jerry Schippa @jerryschippa.bsky.social · 07/07/2026
I really am going to keep beating the drum that center running lanes are underrated...yes, UNDERrated. Two loop detectors can deliver incredible TSP in a clean lane.
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Jerry Schippa @jerryschippa.bsky.social · 07/07/2026
Never change Board game reddit.
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