Sunday, February 23, 2014

Speed Limits in Cities - ITE Listerv Discussion with Sam Schwartz

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Occassionally there's time during the day to review the Institute of Transportation Engineers' Listserv. This is one of the greatest...

Troubleshooting Traffic Signals with Arrows

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A colleague sent me this Boston Globe article  on a traffic signal display. Portland has 15 or so traffic signal locations with Flashing Y...
Saturday, February 15, 2014

Peter Koonce Bio

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Peter Koonce, P.E., manages the City of Portland Bureau of Transportation's Signals, Street Lighting, & ITS Division. He has served ...
Monday, February 10, 2014

Detecting bicycles at traffic signals study

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The city is constantly trying to innovate to improve its traffic signals particularly for multi-modal transportation that has been neglecte...
Thursday, January 23, 2014

NACTO Urban Street Design Guide Webinar, presented by APBP

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I found it difficult to find the webinar on the NACTO Urban Street Design Guide, so I am reposting it here. My portion of the presentation i...

What does the Signal Timing described in the NACTO Urban Street Design Guide look like?

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Giving a little more thought to the signal timing in the Urban Street Design Guide brings me back to a post I created three years ago. The p...
Wednesday, January 22, 2014

Flashing Yellow Arrows for Protected Permitted Left Turns

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There has been quite a bit of discussion lately about Flashing Yellow Arrows. It's actually died down quite a bit, but I found this Nat...