Final answer:
Motorists driving at night should prioritize visibility, weather conditions, and speed limits for safe driving. Vehicle weight and tire pressure are important for maintenance but don't uniquely change at night, yet they should still be monitored, especially in cold weather.
Step-by-step explanation:
When driving at night, motorists should consider several factors to ensure safety. These include visibility, which can be significantly reduced during nighttime driving, and weather conditions, which can affect road surface and visibility. In addition to these, it is always important to adhere to speed limits, which are set based on the maximum safe traveling speed under ideal conditions and may need to be adjusted for nighttime driving.
Factors like vehicle weight and tire pressure are also important for vehicle performance and safety, but they do not change uniquely at night. However, they should still be checked regularly as part of vehicle maintenance. The winter season can add further complications with colder temperatures affecting tire pressure, and potentially icy roads requiring more cautious driving.