Yellow Trap Traffic Signals

Views of two "Yellow Trap" signals in operation - one in the collection and one out in the field. For an animated explanation of the "Yellow Trap" problem please visit http://projects.kittelson.com/pplt/LearnAbout/Learn3.htm . The signal presented in the collection is a four section 12 inch Laboratory for Electronics (LFE) polycarbonate signal.

Category:

Science & Technology

Tags:

• Traffic Signals
• yellow trap
• lfe

[wildhorseguy]

A couple of updates. The original yellow trap phasing during some trials as shown here did not include a yellow clearance interval based on the assumption that the flashing yellow arrow meant a non-protected turn. However the final MUTCD specs called for a standard yellow clearance indication between the green arrow and flashing yellow arrow. Currently there are studies underway regarding retroffiting of doghouses to also use the flashing yellow arrow.

[Mudimush]

The new 2009 MUTCD was published 12/16/2009 and contains the FYA.

[wildhorseguy]

Yep. Doghouses will no longer be installed over, or to the left of, left turn pockets. Protected / Permissive left turns will be 4 in-line heads with flashing yellow arrows. (For readers of Mudimush's post, "FYA" = flashing yellow arrow.) Also the short clearance is only supposed to occur in the field signal when opposing traffic is red although I'll check. Clearance interval duration is a critical issue to consider, however.

[jhoenedu]

I Love The Video It Can Increase My Knowledge Yellow Trap Traffic Signals

[croncong]

Good, I like that you share this video, I wish success always Yellow Trap Traffic Signals

[fitnesus]

Nice Video That You Share , So Very Nice Thanks You Yellow Trap Traffic Signals

[lupabuatchannel]

I Really Like The Video From Your Views of two Yellow Trap signals in operation - one in the collection and one out in the field.

[cenedywong]

Your Video Is Very Useful Sharing The signal presented in the collection is a four section 12 inch Laboratory for Electronics (LFE) polycarbonate signal.

[FEDERALSIGNALTECH]

My state needs this to fix our broken yellow trap.

[BBT609]

I have a traffic signal and I need a relay for it and switches to change the color.

[45barber1]

if i see that light in the next intersection im turning around.

[exoticcar5482]

is this better than the doghouse? if so, how?

[SUNSBEATLA13]

so when it flashs yellow it means u can go but u have to yeild on coming traffic