Final answer:
False. As other factors like fog and bright sunlight can also impair vision. Weather conditions can also affect road or surface conditions, leading to additional hazards.
Step-by-step explanation:
The statement Rain and snow only decrease your ability to see ahead is false. While rain and snow can significantly reduce visibility, which is crucial for safe driving or piloting, other weather phenomena such as fog, hail, and even bright sunlight can also impair your vision. Moreover, rain and snow can also affect surface conditions, making them slippery and potentially dangerous. Good visibility during any activity, like driving, is essential to notice the conditions around and react appropriately in time to avoid hazards.
For example, while driving, if rain or snow decreases visibility, drivers may not see other vehicles, pedestrians, or road signs clearly, leading to a higher risk of accidents. Similarly, in aviation, pilots rely on being able to see other aircraft, the runway, and navigation aids, and poor visibility due to weather conditions can pose significant safety risks.