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Record of Activities, Problems, Issues, Success | CE 474, Study notes of Civil Engineering

Material Type: Notes; Class: Traffic Systems Design; Subject: Civil Engineering; University: University of Idaho; Term: Unknown 1989;

Typology: Study notes

Pre 2010

Uploaded on 08/19/2009

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Download Record of Activities, Problems, Issues, Success | CE 474 and more Study notes Civil Engineering in PDF only on Docsity! Class 01 – Traffic Systems Design  25 August 2008    1    CLASS PLAN AND RECORD Class/Date: Class 01 (25 August 2008) Plan (Topics to Cover): Record of Activities, Problems, Issues, Success:       Class 01 – Traffic Systems Design  25 August 2008    2    Slide  Notes  1  Welcome to CE 474.  I hope that you had a good summer.  Sign‐up sheet with email addresses.  2  Today’s outline  [see list]  3  Web site of the day.  Why do I show these each time?  Today’s site:   • US DOT  • Two sites with history of traffic signal  4  Why traffic signal systems? William Potts – 1920  First three color, four direction traffic signal in 1920  5  Garrett Morgan invention Electric automatic traffic signal  6  Congestion has been around as long as we have gathered in cities.  Here is Cleveland, Ohio in 1915  7  Why do we consider traffic signals important as we talk about congestion? [see list]    •   8  Why traffic signals?  [ask them]   Two answers  • To keep cars from running into each other  • To make sure cars don’t stop, or don’t stop for too long  9  But we are not doing a good job nationally in managing our signal systems  and the congestion that results.  10  So, what is a traffic signal system? Let’s first look at the system components and how they interact.  • Users respond to display  • Detection system responds to user  • Controller responds to detector  • Display responds to controller 
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