For a city bus to not be a fuel hog, it must maintain a 50% occupancy at all times it is in operation---something that is exceptionally rare in the United States. Current DOT statistics show that the average transit bus in the US is empty 60% of the time. For traffic diets to show an improved level of safety, driver behavior before entering the diet zone and exiting the diet zone must be excluded. Drivers jockey for position before entering the zones and speed up to pass the slow pokes when exiting the zone creating, (according to DOT) accident "hot spots" outsize the diet zones. Traffic diets can't move as much traffic as a 4 lane road---physically impossible to move 4 lanes of traffic on two lanes, further, the only way they get close to keeping up is by motorists unlawfully using the two way turn lanes to pass people trying to park of busses stopped at bus stops. If fewer lanes moved more traffic, freeways would only need one lane in each direction.