Climate and Biomes. Climate. We have observed that plants require light, water, carbon dioxide, soil minerals and some reasonable temperature to survive. We have considered most of these factors and it is time to consider temperature, itself tied into all of these other factors in some way. This one environmental factor strongly determines the distribution of plants on the planet. Latitude. The Equator.
Stopping sight distance is the sum of two distances: (1) the distance traversed by the vehicle from the instant the driver sights an object necessitating a stop to the instant the brakes are applied; and (2) the distance needed to stop the vehicle from the instant brake application begins.
Then it is possible to relate a safe driving speed to a given sight distance, or a safe sight distance to a given driving speed. On a one-lane road with two-way traffic, or a two-lane road where vehicles may use both lanes, the stopping distance must even remain below half the sight distance.