New signal phase

Earlier today, I included a third phase to my Marbelite M-30 electro-mechanical signal controller.
This phase is a protected left turn movement. The protected left turn movement is for the first two phases, which are "Main Street" and the side street. For "Main Street," the protected left turn movement begins at the very end of the the first phase, while the protected turn movement begins before the second phase, and it lasts until half way in the second phase. Note that my 8' arrow and green ball (side street) are spliced together. Had an original set-up. Only reason. New set-up will have a second terminal section for the protected left turn arrows. More to come.

Category:

Education

Tags:

• traffic
• signal
• left
• turn
• movement
• phase
• marbelite
• m-30