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by **TacomaJoe** on Sat Oct 01, 2011 8:48 pm

Read an interesting book, "Electro-Matic Vehicle Actuated Road Signals" chronicling the company's 25 year history in the business. It starts with the basic two phase intersection and runs through adding phases and overlaps to provide early cut-off or late start of a phase.

Basic timing is discussed including volume density, coordination, and priority for special vehicles. One feature that caught my eye was "conditional red clearance" which can omit the red clearance when it is not needed such as when a phase gaps out.

Also included was their line of pedestrian and vehicles detectors. One that I picked up on was a contact closure assembly mounted on the line to pick up a trolley. They had signal heads, mounting hardware and terminal assemblies.

I should add that the book was written by the Automatic Telephone & Electric Co in 1957 and starts with a photo of the turn-on ceremony of the first "Electro-matic" signal installation in Europe on March 14th 1932.

by **notMUTCDcompliant** on Sat Oct 01, 2011 9:31 pm

Hmmm.. amazon says hardcover - not available! Dam no kindle.... :cry:

Sounds cool!

by **TacomaJoe** on Sat Oct 01, 2011 9:33 pm

I missed it on eBay but then found it on Amazon.

by **LarryC39** on Sat Oct 01, 2011 11:06 pm

Joe, I just got my copy in the mail today. You missed an important detail...AT&E was the company that later became the PLESSEY line of traffic signals!!! Full of good Plessey pictures including a catalog section :shock:

Full circle and the half cap/half tunnel visors as options. :bananas:

It does not cover Automatic Signal/Electromatic in the USA.

by **LarryC39** on Sat Oct 01, 2011 11:09 pm

Why is my banana stuck in that position? It should be dancing.

by **TacomaJoe** on Sat Oct 01, 2011 11:16 pm

AT&E was the company that later became the PLESSEY line of traffic signals!!!

I was thinking the photos looked a lot like the Plessey that I have. You paint a with white and black stripes and they all look the same.

by **2070** on Sun Oct 02, 2011 4:23 am

LarryC39 wrote:Why is my banana stuck in that position? It should be dancing.

You know Larry.......... :crazy:

That is what can happen when you pull out early...... :hurl:

by **3liteguy** on Sun Oct 02, 2011 4:49 am

ok that is morrrrrreeee than enough 'vivid imagery', move along! :hurl:

by **LarryC39** on Sun Oct 02, 2011 9:56 pm

The

is working again. Back to the main topic. Awesome book.

by **EPAC-EPIC-MARC** on Sun Oct 02, 2011 10:03 pm

2070 wrote:
LarryC39 wrote:Why is my banana stuck in that position? It should be dancing.

You know Larry..........

That is what can happen when you pull out early......

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