Please click on the picture
for a closer view!


ALABAMA- Alabama
installations use mono-tube arms with yellow 12" signal heads
hanging from span wire mountings. This enables them to move in
high winds and keep pressure off of the attachment. This example
is located in Mobile. (Photo by Alex Nitzman)

CONNECTICUT-
Unusual signals abound in the Northeast and this signal is no
exception! To save on signal heads, this signal displays the red
for through movements and the green arrow for protected right
turns! Pretty fascinating...and confusing for
out-of-towners! (Photo by Paul DaSilva)

DELAWARE- Here
is a simple diagonal span wire installation that is typically
used in Delaware's older installations. Note how two directions
of traffic are served by the one wire span. Unfortunately,
this type of installation can present problems for the motorist
to be able to see the signal when stopped on the approach that
has the steeper signal viewing angle. Usually this can be reduced
by setting the limit line further upstream of the intersection.

Here is a newer
installation with the signals in both directions mounted on a
single mast arm. This is used mostly on "T"
intersections where the side road terminates into the main
artery. The left turn pocket signals are mounted on their own
mast arm. (Photos by Alex Nitzman)

FLORIDA- This is
an example of Florida's "span wire" signals. The typical
installation is heavy steel wire strung between tall concrete
"strain" poles located on each corner. This is a less
expensive installation than a mast arm type, but is subject to
more maintenance and weather problems.

Another example
of the Florida installation. This is known as a "box
span" installation, as the signals "form a box"
around the intersection. As with many other states, Florida
doesn't use back plates around the signal heads. Both of these
pictures are located on Atlantic Ave. in Fernandia Beach, which
is on Amelia Island about 30 miles northeast of Jacksonville.
(Photos by Mark Furqueron)

GEORGIA-
Generally, Georgia's signal installations are of the "box
type" variety which use their own vertical strain poles.
This example however makes use of existing utility poles, both
metal and wood, as the strain poles to suspend the span wire!
This is a very good example of a "custom" installation!
(Photo by Dee Taylor)

MARYLAND-
Maryland uses similar installation techniques for most mast arm
and span wire mounting as other states. Their signals are usually
painted yellow and they use 12" signal sections almost
exclusively. This picture also shows the "Doghouse
style" 5 light protective/permissive signal. (Photo by Tony
Lenzi)

Here is a view
of a double mast arm span.(Photo by Michael Mason)

This fire signal
is a bit unusual because of the 8" flashing amber section
that flashes when everything is "normal". When the
signal is activated, it proceeds to the yellow clearance and red
stop intervals just like a standard signal.(Photo by Tony Lenzi)

MASSACHUSETTS-
Signal arrangements in this state are somewhat similar to other
states, with the notable exception of the two-way signals
connected together, hanging from a single point on the wire shown
here. This makes replacement a little more tricky, but saves on
the hang points! (Photo by Paul DaSilva)

MICHIGAN- This
signal (on U.S. 2 in Ironwood) is a typical Michigan signal
installation: Cable hung diagonally over the intersection, with
two assemblies of lights each pointing in four directions.
Variations seen include a third light assembly in the middle
where the "left turn" sign is here. This third assembly
has an illuminated "LEFT" sign on the top but has
"ball" indications rather than arrow lights controlling
left turn traffic. The left turn signals most always have the
illuminated [LEFT] sign above them, as do any
"protected" directions -- [RIGHT] is common. Less
common is [THRU], which is normally used in conjunction with a
single green arrow signal head which is always on, at an
intersection where only one lane (i.e. the [LEFT] is controlled.
Also, very common in Michigan is the "flashing red
left turn light". At intersections where a
"protective/permissive" left turn signal is not used,
and it is safe to do so, a standard three head is used.
During the "protective" phase, the green arrow is
illuminated. During the "permissive" phase, the
red ball flashes. This is treated like a standard red
flasher for the left lane only, where one must stop and proceed
if safe. This is generally used at most intersections,
except for those with exceptionally fast oncoming traffic,
unsafe/blind visibility intersections, or signals controlling a
double lane left turn. Less common, but not rarely seen is
another auxiliary light assembly (but with 8-inch rather than the
standard 12-inch lenses) on the support pole on the far right
corner. (Photo by Steve Riner, and additional information by Bill
Cahill)

MISSISSIPPI-
Here is an example of a signal installation in Mississippi. They
are span wire mounted and frequently use the protected/permissive
method for left turn traffic. This example is at Hwy 493 and
North Hills St. in Meridian. (Photo by Adam Froehlig)

NEW JERSEY- New
Jersey uses truss type mast arms in most of their installations.

Another view of
New Jersey's truss arm signals, located in Atlantic City. Also of
note is the frequent use of double truss masts on a single
pole. (Photos by Alex Nitzman)

NEW YORK- Here
is an example of what was once common in all mid sized towns
across the nation. This 4 way is mounted on a pole and sits on a
huge concrete foundation in the middle of the intersection. This
is so "errant vehicles" wouldn't damage the signal.
This one is located in Canajoharie, N.Y. (Photo by Frank Solomon)

And here is a
hanging version of the 4-way located in Poughkeepsie, NY. Note
the unusual mounting to a vertical pipe, rather that direct to
the span wire. (Photo by Alex Nitzman)
 
SOUTH CAROLINA-
Most of South Carolina's signals are similar to Florida's in
installation methods...with a few notable exceptions, like the
one pictured above. This one is located in Charleston and has
been retrofitted onto an old lamp post. South Carolina has also
has just fully converted to LED units in the red signals. Here in
this view, we see the matrix of tiny LED's that make up the red
"ball" signal. (Photos by Paul Stanford)

Another view of South Carolina
signals. This shows a more typical installation with the 5 light doghouse signal
for protective/ permissive movements.

TENNESSEE- Span
wire installations are common here with this example being in
Memphis. Tennessee uses a lot of 12" signals along with
12" and 8" combo signals together on the span. This
intersection is at Elvis Presley Blvd. and Brooks Rd. (Photo by
Christopher Knight)

VERMONT- This is
an unusually short mast arm installation in Vermont for the
narrower streets. Many times the side mounted signal in these
installations will be mounted higher for increased visibility
around parked larger vehicles or high foliage.

Here is an older
installation in Vermont. Note that they use external terminal
boxes (the small boxes located at the top of the signal on the
wire) to connect the individual signals to the system. (Photos by
Alex Nitzman)
 
VIRGINIA- The
two examples of a Virginia signal shown here are located in the
same city...Alexandria. It shows both the newer mast arm and the
older span wire installations.

Another view of
a pole mounted Virginia signal. Virginia likes to use yellow
signals with cutaway or cap visors. (Photos by John Rietveld)

WASHINGTON,
D.C.- This is a view of a typical DC signal. They are usually
painted dark green or blue-grey and use the 12" heads. Also
note the ornate pole and fancy pinnacle at the top of the
signal. (Photo by John Rietveld)

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