Originally Posted by rickair7777

It was #1, I don't think the 175 has a cargo door on the left side.

Personally I like the beacon... still controlled by the CA, cannot be misunderstood and everyone on the ramp can see it if they care to look. But no reason not to also have a hand signal to the marshaller, who then signals the rest of them. Beacon is a backup in case of misunderstanding.