Almost. Portland/Milwaukie's 7.3-mile, nearly $1.5 billion (construction only) light rail line, which opened amid the usual fanfare last September, ground to a halt late Wednesday and all of yesterday because Electrical Issues. In fact, it emerged that they had issues affecting about a quarter of their little fleet of two-car "trains":
TriMet inspected all of its MAX trains' pantographs before sending them into service on Thursday, and several trains were taken out of service for repairs. Because of the sidelined trains and delays due to the inspections, about a quarter of MAX trains on other lines ran with just one car, leading to crowding and delays for some riders.
Oh yes, and their spiffy new 7.3 mile-long line was completely out of service yesterday. You know, if they ran buses, this wouldn't be an issue.
In related observations, Tri-Met has been forced to halt or slow their two-car light rail "trains" because: the sun came out (heat causes the power lines to sag). It got cold (snow and ice adversely affect operations, since you can't install traction devices such as chains, although they work well on buses). And although the city of Portland banned plastic bags some years ago, some are still in use - and a plastic bag will stop a "train".
Moreover, since Tri-Met chose to run most of their "trains" over a drawbridge in downtown Portland, "service" is periodically interrupted on their red, blue, green, and yellow lines due to Electrical Issues associated with bridge lifts.
Still, we really need to spend around $2.5 billion to ram another light rail line through the "Southwest Corridor".