Traffic Signal Challenge

[RobbieL2415]

A walk-through of a couple ConnDOT installations, starting with the most recent:

T-intersection with opposite-turn doghouses on the primary road.
https://www.google.com/maps/@41.8306377,-72.5550946,3a,52.2y,4.45h,84.71t/data=!3m6!1e1!3m4!1sKp3XXbvVHTV7MWZqOnidNQ!2e0!7i16384!8i8192
The best of both worlds in terms of monitoring technology; has both IP video and loop detection. It took about a month for the new system to be calibrated. Left turn doghouse only activated upon detection.  Only con here is that the right turn doghouse goes to red when directions switch. The old setup never did that, just went straight to the arrow.

Suburban mega traffic flow installation from around 1990.
https://www.google.com/maps/@41.8060456,-72.5546466,3a,75y,326.93h,87.28t/data=!3m6!1e1!3m4!1shvMlJvJX2sTK6f9PGRXHTQ!2e0!7i13312!8i6656
Sadly, this is being replaced with an LPI setup. This is part of a network of signals controlling traffic in a major shopping area. I believe the loop detection is all interconnected, so the traffic volumes can get high but there's no intersection blocking or long waits at off-ramps. The seperated right turn lanes make this intersection stupid efficient. Only cons here is there's no video and that its going away.

Late 80s installation serving an underpowered intersection.
https://www.google.com/maps/@41.8380871,-72.4662792,3a,75y,10.3h,79.12t/data=!3m7!1e1!3m5!1syWjNw0I85VNHPB6NZ_x5Ow!2e0!5s20120901T000000!7i13312!8i6656
Doghouse lefts on the primary (N/S) route, arrows activated by loop detection. Opposing roads have loop detection to switch phases late nite. This signal never goes to FYA/FRA. Biggest con is the lack of dedicated left turn lanes for the E/W routes.  There's ramps to I-84 off of Bolton Rd. and it gets busy during peak times.

Unique installation from the early-mid 80s:
https://www.google.com/maps/@41.7086808,-72.7003104,3a,64.3y,211.83h,88.8t/data=!3m7!1e1!3m5!1sTX12z0QLvjMq4NDGg3D0zw!2e0!5s20190901T000000!7i16384!8i8192
I don't like these lights. They're timing seems arbitrary. Signals on left are 3M lenses, possibly the only 3Ms in the state, ones on the right are just light shielded. Personally, I'd widen the Berlin Turnpike to four lanes to the CT 175 E ramp; the first right lane would still exit to CT 175 W, and the second would be for 175 E On-ramp to Turnpike South gets a stop sign.

Most bizarre installation in the state:
https://www.google.com/maps/@41.658327,-72.8669053,3a,75y,12.84h,104.87t/data=!3m6!1e1!3m4!1sP-iO3y1lE-ZZ4XF5r2YU8A!2e0!7i16384!8i8192
Another 80s install. The only one with two-element signals that I know of for miles around. There's no left turn coming from the fork but there's also no NTOR sign. Why even have a signal here? My only guess is that it's synced to the one at the next intersection and prevents backups or something.

[STLmapboy]

A walk-through of a couple ConnDOT installations, starting with the most recent:

T-intersection with opposite-turn doghouses on the primary road.
https://www.google.com/maps/@41.8306377,-72.5550946,3a,52.2y,4.45h,84.71t/data=!3m6!1e1!3m4!1sKp3XXbvVHTV7MWZqOnidNQ!2e0!7i16384!8i8192
The best of both worlds in terms of monitoring technology; has both IP video and loop detection. It took about a month for the new system to be calibrated. Left turn doghouse only activated upon detection.  Only con here is that the right turn doghouse goes to red when directions switch. The old setup never did that, just went straight to the arrow.

Suburban mega traffic flow installation from around 1990.
https://www.google.com/maps/@41.8060456,-72.5546466,3a,75y,326.93h,87.28t/data=!3m6!1e1!3m4!1shvMlJvJX2sTK6f9PGRXHTQ!2e0!7i13312!8i6656
Sadly, this is being replaced with an LPI setup. This is part of a network of signals controlling traffic in a major shopping area. I believe the loop detection is all interconnected, so the traffic volumes can get high but there's no intersection blocking or long waits at off-ramps. The seperated right turn lanes make this intersection stupid efficient. Only cons here is there's no video and that its going away.

Late 80s installation serving an underpowered intersection.
https://www.google.com/maps/@41.8380871,-72.4662792,3a,75y,10.3h,79.12t/data=!3m7!1e1!3m5!1syWjNw0I85VNHPB6NZ_x5Ow!2e0!5s20120901T000000!7i13312!8i6656
Doghouse lefts on the primary (N/S) route, arrows activated by loop detection. Opposing roads have loop detection to switch phases late nite. This signal never goes to FYA/FRA. Biggest con is the lack of dedicated left turn lanes for the E/W routes.  There's ramps to I-84 off of Bolton Rd. and it gets busy during peak times.

Unique installation from the early-mid 80s:
https://www.google.com/maps/@41.7086808,-72.7003104,3a,64.3y,211.83h,88.8t/data=!3m7!1e1!3m5!1sTX12z0QLvjMq4NDGg3D0zw!2e0!5s20190901T000000!7i16384!8i8192
I don't like these lights. They're timing seems arbitrary. Signals on left are 3M lenses, possibly the only 3Ms in the state, ones on the right are just light shielded. Personally, I'd widen the Berlin Turnpike to four lanes to the CT 175 E ramp; the first right lane would still exit to CT 175 W, and the second would be for 175 E On-ramp to Turnpike South gets a stop sign.

Most bizarre installation in the state:
https://www.google.com/maps/@41.658327,-72.8669053,3a,75y,12.84h,104.87t/data=!3m6!1e1!3m4!1sP-iO3y1lE-ZZ4XF5r2YU8A!2e0!7i16384!8i8192
Another 80s install. The only one with two-element signals that I know of for miles around. There's no left turn coming from the fork but there's also no NTOR sign. Why even have a signal here? My only guess is that it's synced to the one at the next intersection and prevents backups or something.

CT has some seriously ancient signals, might be the oldest average age in the country (though OH can get ancient in places too).

[jakeroot]

T-intersection with opposite-turn doghouses on the primary road.
https://www.google.com/maps/@41.8306377,-72.5550946,3a,52.2y,4.45h,84.71t/data=!3m6!1e1!3m4!1sKp3XXbvVHTV7MWZqOnidNQ!2e0!7i16384!8i8192
The best of both worlds in terms of monitoring technology; has both IP video and loop detection. It took about a month for the new system to be calibrated. Left turn doghouse only activated upon detection.  Only con here is that the right turn doghouse goes to red when directions switch. The old setup never did that, just went straight to the arrow.

I'm a little confused. When did the green arrow come on for the right turn? For that kind of installation, it's usually a good idea for the green arrow to start after a brief all-red delay, to allow oncoming traffic to finish their turn when the light changes to red. If the old intersection had a green arrow that activated before this point, that's kind of asking for an accident (since traffic would be turning right freely with the green arrow, as oncoming traffic is simultaneously attempting to finish their turn).

[RobbieL2415]

A walk-through of a couple ConnDOT installations, starting with the most recent:

T-intersection with opposite-turn doghouses on the primary road.
https://www.google.com/maps/@41.8306377,-72.5550946,3a,52.2y,4.45h,84.71t/data=!3m6!1e1!3m4!1sKp3XXbvVHTV7MWZqOnidNQ!2e0!7i16384!8i8192
The best of both worlds in terms of monitoring technology; has both IP video and loop detection. It took about a month for the new system to be calibrated. Left turn doghouse only activated upon detection.  Only con here is that the right turn doghouse goes to red when directions switch. The old setup never did that, just went straight to the arrow.

Suburban mega traffic flow installation from around 1990.
https://www.google.com/maps/@41.8060456,-72.5546466,3a,75y,326.93h,87.28t/data=!3m6!1e1!3m4!1shvMlJvJX2sTK6f9PGRXHTQ!2e0!7i13312!8i6656
Sadly, this is being replaced with an LPI setup. This is part of a network of signals controlling traffic in a major shopping area. I believe the loop detection is all interconnected, so the traffic volumes can get high but there's no intersection blocking or long waits at off-ramps. The seperated right turn lanes make this intersection stupid efficient. Only cons here is there's no video and that its going away.

Late 80s installation serving an underpowered intersection.
https://www.google.com/maps/@41.8380871,-72.4662792,3a,75y,10.3h,79.12t/data=!3m7!1e1!3m5!1syWjNw0I85VNHPB6NZ_x5Ow!2e0!5s20120901T000000!7i13312!8i6656
Doghouse lefts on the primary (N/S) route, arrows activated by loop detection. Opposing roads have loop detection to switch phases late nite. This signal never goes to FYA/FRA. Biggest con is the lack of dedicated left turn lanes for the E/W routes.  There's ramps to I-84 off of Bolton Rd. and it gets busy during peak times.

Unique installation from the early-mid 80s:
https://www.google.com/maps/@41.7086808,-72.7003104,3a,64.3y,211.83h,88.8t/data=!3m7!1e1!3m5!1sTX12z0QLvjMq4NDGg3D0zw!2e0!5s20190901T000000!7i16384!8i8192
I don't like these lights. They're timing seems arbitrary. Signals on left are 3M lenses, possibly the only 3Ms in the state, ones on the right are just light shielded. Personally, I'd widen the Berlin Turnpike to four lanes to the CT 175 E ramp; the first right lane would still exit to CT 175 W, and the second would be for 175 E On-ramp to Turnpike South gets a stop sign.

Most bizarre installation in the state:
https://www.google.com/maps/@41.658327,-72.8669053,3a,75y,12.84h,104.87t/data=!3m6!1e1!3m4!1sP-iO3y1lE-ZZ4XF5r2YU8A!2e0!7i16384!8i8192
Another 80s install. The only one with two-element signals that I know of for miles around. There's no left turn coming from the fork but there's also no NTOR sign. Why even have a signal here? My only guess is that it's synced to the one at the next intersection and prevents backups or something.

CT has some seriously ancient signals, might be the oldest average age in the country (though OH can get ancient in places too).

Depends on what you consider ancient. A majority of our installs were redone in a giant wave in 90s and now a second wave is happening.

MA signals IMO are much older on average. They have a lot of stuff stuck in the 70s and 80s, and a lot more free-standing signals.

[Amtrakprod]

A walk-through of a couple ConnDOT installations, starting with the most recent:

T-intersection with opposite-turn doghouses on the primary road.
https://www.google.com/maps/@41.8306377,-72.5550946,3a,52.2y,4.45h,84.71t/data=!3m6!1e1!3m4!1sKp3XXbvVHTV7MWZqOnidNQ!2e0!7i16384!8i8192
The best of both worlds in terms of monitoring technology; has both IP video and loop detection. It took about a month for the new system to be calibrated. Left turn doghouse only activated upon detection.  Only con here is that the right turn doghouse goes to red when directions switch. The old setup never did that, just went straight to the arrow.

Suburban mega traffic flow installation from around 1990.
https://www.google.com/maps/@41.8060456,-72.5546466,3a,75y,326.93h,87.28t/data=!3m6!1e1!3m4!1shvMlJvJX2sTK6f9PGRXHTQ!2e0!7i13312!8i6656
Sadly, this is being replaced with an LPI setup. This is part of a network of signals controlling traffic in a major shopping area. I believe the loop detection is all interconnected, so the traffic volumes can get high but there's no intersection blocking or long waits at off-ramps. The seperated right turn lanes make this intersection stupid efficient. Only cons here is there's no video and that its going away.

Late 80s installation serving an underpowered intersection.
https://www.google.com/maps/@41.8380871,-72.4662792,3a,75y,10.3h,79.12t/data=!3m7!1e1!3m5!1syWjNw0I85VNHPB6NZ_x5Ow!2e0!5s20120901T000000!7i13312!8i6656
Doghouse lefts on the primary (N/S) route, arrows activated by loop detection. Opposing roads have loop detection to switch phases late nite. This signal never goes to FYA/FRA. Biggest con is the lack of dedicated left turn lanes for the E/W routes.  There's ramps to I-84 off of Bolton Rd. and it gets busy during peak times.

Unique installation from the early-mid 80s:
https://www.google.com/maps/@41.7086808,-72.7003104,3a,64.3y,211.83h,88.8t/data=!3m7!1e1!3m5!1sTX12z0QLvjMq4NDGg3D0zw!2e0!5s20190901T000000!7i16384!8i8192
I don't like these lights. They're timing seems arbitrary. Signals on left are 3M lenses, possibly the only 3Ms in the state, ones on the right are just light shielded. Personally, I'd widen the Berlin Turnpike to four lanes to the CT 175 E ramp; the first right lane would still exit to CT 175 W, and the second would be for 175 E On-ramp to Turnpike South gets a stop sign.

Most bizarre installation in the state:
https://www.google.com/maps/@41.658327,-72.8669053,3a,75y,12.84h,104.87t/data=!3m6!1e1!3m4!1sP-iO3y1lE-ZZ4XF5r2YU8A!2e0!7i16384!8i8192
Another 80s install. The only one with two-element signals that I know of for miles around. There's no left turn coming from the fork but there's also no NTOR sign. Why even have a signal here? My only guess is that it's synced to the one at the next intersection and prevents backups or something.

I'll say my review:
T-intersection with opposite-turn doghouses on the primary road.

The signal placement is quite good. But I see far more negatives. First off no FYA, damn it CT, what is with y'all and the opposition to FYAs. Secondly where is the protected right turn signal for the side road? There is a right turn only lane, and a corresponding left turn permissive protected left signal. Not good CT, not good. Good to see the right turn doghouse doesn't give a second yellowtrap though.


Suburban mega traffic flow installation from around 1990.

This is a very CT light, in a bad way. Traffic lights painted different, but I do like the slip lanes.


Late 80s installation serving an underpowered intersection.

Besides the lack of FYAs, I like this set up. I'm a big fan of the 8 inch side street signals. That's my favourite thing about CT signals. I'm doubtful this is late 80s btw.


Unique installation from the early-mid 80s:

No way this is early to mid 80s. Likely early 2000s late 1990s.
It bothers me that both aren't of the same kind. Louvers are kinda crappy but whatever. Pretty unique light set up though.


Most bizarre installation in the state:

Woah! I assume the two colored signals are green and yellow, so at night when the light is in flash it flashes yellow. I see the CT standard louvered red ball left signal (not a fan, but better than PA with no louver). It is a strange set up, but it works!