04-13-2016, 04:50 PM
An advance green, even a short one, is important as it clears out the cars turning left (or, I should say - it has a better chance of clearing them out). Without that, just one car turning left effectivley halves the intersection's through capacity, since one of the two lanes in each direction is blocked. People will always tend to shift to the right lane if the car in front of them has their left turn signal on when they approach the red, so you tend to get 3 or 4 cars in a row all waiting right at the stop bar to turn left. So an advance will clear them out.
Therefore I believe a slightly longer advance could actually increase the capacity of the intersection, rather than hinder it.
Therefore I believe a slightly longer advance could actually increase the capacity of the intersection, rather than hinder it.