As requested. Let's take a look at how Traffic Signal Arrows function. There are several in Medway including steady green left-turn arrows at Milford & Main Streets and at Holliston & Main Streets. A steady yellow arrow indicates that you must slow down and stop as the arrow is turning red. After a quick red light at which traffic must stop to allow other traffic to move, the flashing yellow turn signal acts as a yield signal allowing traffic to turn when they gain the right of way. Vehicles traveling straight have the right of way when a flashing yellow signal is activated.
These types of signals are designed to reduce traffic congestion and crashes. The first flashing yellow arrow signal in Massachusetts was installed in a dangerous intersection located in Lenox during 2014 and was credited with reducing crashes. Since then, the use of flashing yellow turn arrows has become far more common.
See the posted links for more information and an informational video.
