Driving while texting and/or using a smartphone could lead to more unsafe driving but might it also make traffic worse? Here are a few things I observed recently:

-The delayed start from a traffic light. Vehicles at the start of the line may not move for a few seconds after the light turns green, even when the path is clear. This slows down the rest of traffic, particularly when there are a lot of traffic lights in a row.

-The increased distance between vehicles. If drivers think they need more margin because they are not fully paying attention to the road, vehicles will be further spaced out.

-Not paying attention to directions or turns might mean people have to cut across lanes or make alternative paths.

Since traffic can act like waves, then even a slight disruption can have a ripple effect.

If all drivers took the “most efficient” or “fastest” routes according to their apps, would these hits to traffic be cancelled out?

It might also be worth remembering that one of the appeals of self-driving vehicles is that they could better address these issues. They could better safe themselves and adjust to changes in conditions around them.