This refers to cross roads, entrance ramps and places where you may expect vehicles to enter your current path of travel
4, 6, 10, 18, oversize
The number in this context is used to refer to other vehicles on the road. Often you will hear terms like
"4 times 2"(referring to 2 cars) or
"18 up"/"18 back" (referring to a truck going to pass or coming the opposite direction)
Refers to a tire.
Gator on the zipper
Lanes are counted from left to right, including the HOV lane(unless otherwise agreed upon by the group)
Is there any lingo I'm missing?