Dual Lefts at a Stop Sign

[RustyB]

Is there research out there that deals with the safety of installing dual (i.e. side by side) left turns at the bottom of a three-way stop controlled T intersection with two lanes in each direction on the top of the T?

 

[bjanderson]

is anyone had any experience with "dallas phasing" of a permitted left turn opposite a lagging left but only using the red, yelow and green ball indications with out the arrows. i have extremely low volume permitted left that needs some indication before i can safely lagg the opposite dual left.

 

[bjanderson]

is anyone had any experience with "dallas phasing" of a permitted left turn opposite a lagging left but only using the red, yelow and green ball indications with out the arrows. i have extremely low volume permitted left that needs some indication before i can safely lagg the opposite dual left.

 

[ACtrafficengr]

I suspect that if you're seriously considering dual lefts at a stop sign, a roundabout or signal may be in order.

 

[marks55]

If you have 2 lanes of traffic on the major and enough traffic on the minor to need 2 lanes you will probably meet the MUTCD signal warrants. 2 lanes moving the same direction from the minor is very tricky due to sight lines (one lane blocks the other) and path overlap issues. I would consider this only after all others avenues have been explored.