Severe operating conditions mean the following:
- A - driving in dusty areas
- B - frequent short distance trips
- C - towing a trailer
- D - prolonged engine idling
- E - driving in extremely adverse weather conditions or in areas with very low (high) temperatures
- F - driving in areas with high humidity or mountainous terrain
- G - driving on roads sprinkled with salt or other corrosive substances
- H - driving on uneven, dirty or sandy roads
- I - frequent braking or driving on mountain roads
