Final answer:
Speeds should be reduced below the posted speed limit for both unfavorable weather conditions and approaching and crossing an intersection.
Step-by-step explanation:
Speeds should be reduced below the posted speed limit for both of the following reasons:
- The driver is driving in unfavorable weather conditions.
- The driver is approaching and crossing an intersection.
Reducing speed in unfavorable weather conditions is important in order to maintain control of the vehicle and prevent accidents. Approaching and crossing an intersection at a lower speed increases safety as it allows the driver more time to react to other vehicles or pedestrians.