Commercial vehicle drivers must dynamically adjust vehicle speed and control systems based on surface traction and weather conditions. Match each hazardous road condition on the left with its correct CDL-mandated speed adjustment and vehicle control action on the right.
- Packed snow covering roadway travel lanesReduce speed by at least one-half () to maintain traction and directional stability.
- Standing water resulting in hydroplaning and steering lossRelease the accelerator pedal and push in the clutch without applying the brakes.
- Wet pavement while equipped with an active engine retarderDisable the retarder system and reduce operating speed by approximately one-third ().
- Icy road surface or shaded bridge deck near freezing point ()Slow down to a crawl and safely exit the roadway as soon as possible.
Answer
Packed snow matches with reducing speed by at least one-half; hydroplaning matches with releasing the accelerator and pushing in the clutch; wet pavement with retarders matches with disabling the retarder and reducing speed by one-third; icy surfaces match with reducing speed to a crawl.
Each hazardous condition corresponds to a specific CDL standard: packed snow requires at least a one-half speed reduction, hydroplaning requires releasing the throttle and clutching without braking, wet pavement requires a one-third reduction with retarders turned off, and icy roads require slowing to a crawl.
Step-by-Step Solution
Key Concept
CDL Speed Adjustment Proportions and Traction Control Management Across Adverse Road Surface Conditions
Estimated Time:1m 30s