And how's your Friday going?
Slowly, if you're a purveyor of Muni. A malfunction with the system's signal loop -- which allows trains to enter automatic mode in the Metro Tunnel -- has led to snail-like trips in light-rail vehicles.
Muni spokesman Paul Rose said calls came in about 5:30 this morning regarding the problem. Crews continue to investigate the source of the malfunction. Trains are currently navigating the tunnel in manual mode -- i.e. slowly.
In the past, trains' sander hoses -- which pour sand on the tracks to aid braking -- have severed the signal loop cable. That has been ruled out in this case, however.
Finally, how slow is slow? It took your humble narrator 45 minutes to traverse from 18th and Church to Duboce and Church this morning. Doing the math, that's six-tenths of a mile in three-quarters of an hour, or 0.8 miles per hour. By comparison, a snail moves at only 0.03 miles per hour. So Muni isn't actually moving at a snail's pace. It is, however, moving more lethargically than a spider.