There are times when you'll read or hear somebody refer to each side of an Airstream travel trailer or touring coach as the "curbside" or "streetside". Whether it's in reference to a body panel, window, awning, door, outlet, or any other exterior feature, it's important to orient yourself with the difference between two sides.
Airstream's are manufactured for global use and orientation for which side is referred to as "curb" vs "street" may change depending on which side of the road traffic drives on but one thing that will always be the same is the direction the front of the RV is pointing.
In countries such as the United States where people drive on the right-hand side of the road and drivers are seated on the left side of the tow vehicle, the Curbside is labeled as such because the travel trailer side is facing the road curb while being towed down the highway.
The curbside is also synonymous with "door side" since the entry doors are always located on this side of the RV.
The Curbside - faces towards the road curb
The Streetside - faces towards the street
The streetside is labeled as such because the travel trailer side is facing the street while being towed down the highway. In boating terms, this side as known as port side.
Use at a Campsite
The same rules apply even if you're not actively traveling down the road which might come in handy while setting up camp or instructing somebody else who is coordinating the set up.
"Point the front at the campfire", could be misunderstood and you might end up with the A-frame pointed at the campfire instead of the main entry door.
These directional labels also provide a level of clarity when needing to define the difference between what some may see as "left" or "right" depending on where they're standing.