The most common and most likely answer to this crossword clue is the 3 letter word CAB
I've seen this crossword clue in Financial Times
C
A
B
More clues leading to the result CAB
- Flyer taking taxi: airline say upset as snow appears
- Simple dwelling — home lacking vehicle
- Transport info for citizens provided here
- I’ve drab car, not a flashy type to give others a ride
- North-bound German composer gets cut off by a taxi
- Some bric-a-brac for driver’s compartment
- Charlie and Jack in driver’s compartment
Buddy explains!

The straight part
We know that "driver’s compartment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case driver’s compartment = cab.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CAB mean?
CAB noun- A taxi; a taxicab.
- Compartment at the front of a truck or train for the driver
- Shelter at the top of an air traffic control tower or fire lookout tower
- Any of several four-wheeled carriages; a cabriolet
- To travel by taxicab.
- A former Hebrew unit of volume, about equal to 1.3 L as a dry measure or 1.25 L as a liquid measure.
- Initialism of chest compressions, airway and breathing.
- Initialism of caffeinated alcoholic beverage.
- An arcade cabinet, the unit in which a video game is housed in a gaming arcade.