Different types of storms require the use of different snow-fighting techniques. The decision whether to salt or plow depends upon the expected weather conditions. For example, if the temperature is below 18 degrees and not expected to rise, salt will not be effective. But if the sun is shining and the temperature is 20 degrees or more and expected to remain steady or to rise, then salt would be more effective. The decision whether to plow or salt is made with great consideration and based on the latest weather information available. Plowing under the wrong conditions can create a polished street surface, resulting in dangerous glare ice. The decisions made by an experienced crew and supervisory personnel are critical.