Where should fire extinguishers be carried?

The conditions are

Fire extinguishers may be carried anywhere on the transport unit provided those conditions are met. Typical problems that arise are

Corrosion of fittings of the protective container making it hard to access the extinguisher. Where this occurs it suggests that it is not examined as part of daily or other routine checking of the vehicle and its equipment
Inspection records being scraped off as the extinguisher is lifted in and out of the container
The extinguisher being hard to find in the cab
Sometimes the plastic tab fitted to prevent accidental operation of the extinguisher is replaced by a stout cable tie. These can only be broken if a sharp tool is available. The use of cable ties for this purpose is not acceptable.