Offside and Nearside!
In the motor industry the explanation for which side of a car you are describing is usually described by the Offside or Nearside.
To the majority of people we usually use the description drivers side or passengers side.
We have noticed that this can cause confusion when explaining something on a customers car.
The easiest way to remember is
The Nearside is the side closest to the kerb also known as the passengers side
Therefore the Offside is the drivers side.