SUBWAY:
Slide the "Y" hand back and forward underneath the "flat" hand as if showing a
subway car moving underground.
SUBWAY (version 2)
SUBWAY (version 3) NOT recommended
Note: I use a double movement for subway. In the CL:3 version
above, I aim the train toward my elbow.
Compare this sign to "GARAGE." The palm
orientation is a bit different for garage.