ICWS / Traffic Entering When Flashing Examples

[ElishaGOtis]

ICWS = Intersection Conflict Warning Systems

I've come across a bunch of these recently, and I've been told there are two types:

Unsignalized intersection variant with a sign stating "Traffic/Vehicles Entering When Flashing" like this https://maps.app.goo.gl/rnG99rkYyQqC4to87

Signalized intersection variant stating "(Be) Prepare(d) to Stop When Flashing" like this https://maps.app.goo.gl/4ufwJhkFiykZz47Y7

I'm under the assumption that the latter is more common than the former, so I'll be more focused on the former. How many of y'all have seen a beacon like this with a sign "Traffic/Vehicles Entering When Flashing" in advance of an unsignalized intersection?

FDOT D2 has been installing a bunch of these recently, mainly the former with plans to add the latter.

[epzik8]

Maryland's are overhead, like this.

[Big John]

Georgia example of Vehicle approaching warning: https://maps.app.goo.gl/1PfPFMcp6VvQJF4L8

[Revive 755]

One in Lake County, Illinois on a county road: Fairfield Road at Saxony Drive
Missouri example that seems to be missing some signs:  US 67 at Victoria Road

I thought there were a few others in Missouri but can't remember where.

[cjw2001]

Indiana SR 144 at Pennington Rd

https://maps.app.goo.gl/k6SD2Bar8kRkyaDXA

https://maps.app.goo.gl/ZF1eF3uK2zfycCgE7

https://maps.app.goo.gl/Gwa5Xm9S2SS5cwoh6

https://maps.app.goo.gl/phMvWsmVZgw7sCPm9

[ElishaGOtis]

While not necessarily an ICWS, it seems to serve a similar purpose. This is in Oklahoma https://maps.app.goo.gl/dHieVfun7kfqyCoJ8

[Big John]

Near Waupaca WI - US 10/WI 49 (Though google only shows the 49 part: https://maps.app.goo.gl/cd9UbwSQz88Uf54e7

[fwydriver405]

There's this one in my hometown of Sanford: US 202 East at Riverside Ave. I think there was another one somewhere near the Portland area, but I can't remember where it was.

I've seen this sign on I-95 south in NH approaching Exit 2 for a truck entrance off of South Rd.

Similarly, in MA, there is this one on US 1 North for the Saugus HS driveway coming onto Route 1.

Although this next example is on an Interstate and not necessily an ICWS, this merge sign on I-90/Mass Pike East serves a similar purpose: Merge - Vehicle Entering. There's also this "Vehicle On Ramp when Flashing" sign on the access road ramp as well. 

[ElishaGOtis]

Although this next example is on an Interstate and not necessily an ICWS, this merge sign on I-90/Mass Pike East serves a similar purpose: Merge - Vehicle Entering. There's also this "Vehicle On Ramp when Flashing" sign on the access road ramp as well. 

Interesting, almost like a Ramp Conflict Warning System! I'm wondering if something like that could be useful with the new MUTCD sign "Heavy Merge From Right/Left" with a "When Flashing" plaque.

[ElishaGOtis]

This flashing light on a mast arm / intersection control beacon (ICB) was replaced by an overhead ICWS sign (albeit with the wrong language pet 11th edition MUTCD ):


This intersection also has a second ICWS sign slightly away from the junction itself, so now it has 2. This is part of a larger plan to replace every a bunch of ICB with an ICWS in D2. This specific installation was a test to see if placing the signage overhead would be a suitable alternative for mast arm ICBs, rather than removing the whole unit.

Not to toot my own horn buuuuuuuuut... I worked on this in part.

[gonealookin]

Nevada:  SR 207 at Tramway Drive, right at the top of Daggett Pass.

SR 207 takes a sharp right curve there, while Tramway comes in from the left (just beyond the end of the guardrail).  I'd guess NDOT put that installation there because the curve might tend to take the driver's eyes away from the intersecting traffic.

[hbelkins]

Kentucky uses both types, the "Prepare to Stop When Flashing" variant having been used for decades while the other type is a lot newer.

I much prefer Kentucky's "Prepare to Stop When Flashing" over Virginia's always-on beacons when approaching a traffic signal.

[RobbieL2415]

Does this count? They turn on when there's high crosswinds on the bridge.
https://maps.app.goo.gl/wAHhquqrkZdBPNhJ9?g_st=ac