Browsing Archive: December, 2012

Thank You!

Posted by Steve Fitzsimons on Tuesday, December 18, 2012, In : For the General Public 
A recent Gallop poll asked respondents to rate how much they trust various professions.  (See http://www.gallup.com/poll/1654/honesty-ethics-professions.aspx#1)   Engineers ranked the fourth highest out of 22 general profession categories.  In the historical trend data summary (see picture) it is clear the trend has been upward for the last several years.  The results of this poll warm my heart, so thank you!  


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Pedestrian Lighting

Posted by Steve Fitzsimons on Tuesday, December 18, 2012, In : For Streetlight designers 
Question:  What is silhouette lighting?  
Answer:  There are two approaches to streetlighting near crosswalks.  The IESNA RP-8 discusses negative contrast and positive contrast options.  Positive contrast occurs when an approaching driver sees the front of a pedestrian brightly lit and contrasted against a dark background.  Negative contract occurs when the approaching driver sees a dark silhouette against a bright background.  
When lighting a crosswalk at an intersection, negative contrast is...
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About Us


Steve Fitzsimons If you would like to ask a question about driving rules, traffic signals or street lights, send your questions to: SFitzsimons@W-Trans.com or call 650-314-8313. Steve Fitzsimons is a professional Civil Engineer and Traffic Engineer in California. He is a principal at W-Trans. Find out more about W-Trans at www.w-trans.com **** If you need a traffic signal design or review, W-Trans is available for hire. If you are an electrical contractor, W-Trans is available for hire to prepare timing plans or traffic control plans.

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