The Standard Interline Passenger Procedure code is a four-letter string used by travel booking systems to classify rental cars uniformly across different agencies. The first letter denotes vehicle size, the second specifies the type or chassis, the third indicates transmission and drive, and the fourth represents fuel type and air conditioning. This standardization allows reservation systems to map fleet inventories from various rental companies into a single comparable matrix.
Heard on the job
The booking system mapped their reservation to an ICAR, meaning an intermediate car with an automatic transmission and air conditioning.
Also heard as
- SIPP code