Performance Skill Standard:
Conditions of Performance:
- Given a typical tractor-trailer rig, a load, a route, and a set of difficult or extreme driving conditions…
Statement of Work to be performed:
- …The driver will identify the conditions and make the appropriate adjustments.
- Explain and demonstrate correct defensive adjustments for at least the following conditions:
- Night operations.
- Cold weather operation.
- Hot weather operation.
- Mountainous terrain.
- Wet conditions.
- Windy conditions.
Performance Elements and Assessment Criteria:
- Judge and adjust speed, distances, and separation under nighttime conditions.
- Demonstrate improved scanning technique.
- Use high beams legally; dim headlights in accord with law and safety.
- Respond safely to glare of other vehicles.
- Manage driver’s fatigue.
- Use proper signaling techniques.
- Prepare for operation in cold weather, including removing snow and ice from windows, mirrors, brakes, lights, and hand holds.
- Inspect for cold weather operation by paying special attention to:
- Coolant level and mixture
- Wipers and washers
- Tire tread
- Wiring system
- Exhaust system
- Fifth wheel
- Expel moisture from the air tanks after each trip.
- Check weather information before and during trips and adjust plan accordingly.
- Check and remove ice accumulation on:
- Air hoses
- Electrical wiring
- Radiator shutters
- Adjust operation of vehicle to maintain control and avoid jackknifing according to weather conditions including:
- Speed selection
- Direction changes
- Following distance
- Assure safe operation of brakes after driving through deep water.
- Use windshield wipers, washers, and defrosters to maintain visibility.
- Start engine in cold weather.
- Observe road surface for changes in conditions.
- Adjust rate of change in speed and direction to road conditions to avoid skidding
- Coordinate acceleration and shifting to overcome the resistance of snow, sand, and mud.
- Carry additional food and clothing to deal with “stop” situations.
- Tread condition
- Cooling system:
- Coolant level and hoses.
- Fan and belts.
- Debris on radiator.
- Carry an ample supply of drinking water.
- Avoid leaving the vehicle if it is disabled in the desert.
- Check brake adjustment prior to mountain driving
- Use right lane or special truck lane going up grades.
- Place transmission in appropriate gear for engine braking before starting downgrade.
- Use proper braking technique and maintain proper engine braking before starting downgrades.
- Use special speed reduction devices properly; e.g., engine brakes.
- Use truck escape ramp, if available, when brakes fail on a downgrade.
- Observe temperature gauge frequently when pulling heavy loads up long grades.
- Use 4-way flashers in accordance with state law and safety