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[Tom89t]

Left  turn traffic signals are on T poles sometimes because some streets are wide and have a median. Here are some examples.                 http://maps.google.com/maps?hl=en&tab=wl                         
Post Merge: January 10, 2012, 11:46:19 PMhttp://maps.google.com/maps?hl=en&tab=wl

[Scott5114]

That just links to a map of the United States...

[Tom89t]

Well I tried, it was working when I posted it.
Post Merge: December 31, 1969, 07:59:59 PMI am using a I pod touch cannot post links like you other guys.
Post Merge: January 11, 2012, 09:35:52 AMhttp://maps.google.com/maps?hl=en&tab=wl
Post Merge: December 31, 1969, 07:59:59 PMJust go to google maps and type in Hawthorne blvd and Artesia blvd and then Lawndale California.

[roadfro]

OP's link

I'd say this is more of a rarity or unique situation than anything else...

[Brandon]

Bizarre.  I've never seen one of those before.  Usually if they're in the median, I've seen those post-mounted.

[myosh_tino]

OP's link

I'd say this is more of a rarity or unique situation than anything else...

That type of left-turn signal isn't as rare as you think.  There are a number of these T or half-T signals up here in northern California although I have not seen any "new installations".

Example 1
Example 2
Example 3
Example 4
Example 5

I most cases, this type of signal was installed where there's a two-lane left turn to accommodate the two regulatory left turn signs ("left+u-turn and left" or "left and left").

[The High Plains Traveler]

OP's link

I'd say this is more of a rarity or unique situation than anything else...

Not so much, I think. I've seen these elsewhere. California has always had two left turn signal heads for protected-only left turn situations even when there was only one left turn lane. Originally (in the days of the 8-8-12 lights) the second head was in the median adjacent to the turn lane so only traffic stopped well back of the stop line could see it. Now, it's either in the opposite left corner of the intersection or, with two left turn lanes, either what you see here or two heads on a very long mast arm. 

[roadfro]

Ok, well rare in the sense that this type of installation isn't really commonplace nowadays. The current preferred method being a single long mast arm for the approach that holds both thru and left signal heads.

Median pole mounted signals, or these "T" poles, are less popular in new installations. Particularly in cases like Myosh's 1st & 3rd StreetView examples with short/narrow median islands, such poles are very susceptible to vehicle strikes. I know of one intersection in Las Vegas where the left turn signals were pole mounted on the islands and multiple hits and replacements finally prompted the city to install a new mast arm to hold the left turn heads.