In the Boston area, one "T" train rear-ended another, for reasons not yet clear.
In Chicago, an "L" train derailed, apparently due to operator error, but luckily none of the cars fell to the ground.
So far, the Boston accident sounds quite a bit worse in terms of injuries incurred. One death is reported.
In an odd coincidence, each mishap occurred on "the Green Line."
Cities use color-coding
for commuter railroading
but how on earth do the color-blind
the right line?