Los Angeles' three light rail lines account for 55 miles of bi-directional guideway that get approximately 126,000 boardings per day. Construction has just begun on another 8.5 mile line that planners say will serve 43,000 riders per day. In other words, the new line will have double the per-mile ridership than the three existing lines.
This is an old story and I have been beating this dead horse for many years. Some proponents are liars and others are ignorant. For good measure, some also pose as high-minded environmentalists.
It adds up to a winning coalition.