What is "qty"

Usage examples of "qty".

Just as we rolled into Iowa Qty he saw another truck coming behind us, and because he had to turn off at Iowa City he blinked his tail lights at the other guy and slowed down for me to jump out, which I did with my bag, and the other truck, acknowledging this exchange, stopped for me, and once again, in the twink of nothing, I was in another big high cab, all set to go hundreds of miles across the night, and was I happy!