Bicycle touring in the fog. Road accident and death on the road.
Fog – a natural, visible aerosol consisting of tiny water droplets or ice crystals suspended in the air near the Earth’s surface, which reduces the visibility in the ground layer of air below 1000 m. When visibility is between 1000 and 2000 m, it is commonly referred to as foggy. When the visibility is over 2000 m, the phenomenon is called haze.
Fog can occur at both positive and negative temperatures. When the temperature is positive, the fog consists of fine water droplets, at a temperature below 0 ° C the fog may consist of fine droplets of supercooled water or ice crystals, possibly a mixture of supercooled water droplets and ice crystals. Hit, collision and death during a bicycle touring.
1 m3 of fog contains from 0.05 g to 1 g of water. In heavy fog (visibility up to 200 m), 1 m3 contains 200-600 water droplets. The radius of these droplets ranges from 0.1 to 50-60 µm. Most often, fog droplets are formed on the condensation nuclei of 50% combustion products, 40% salt crystals and 10% earth particles. In 80% of the mist condensation nuclei have a diameter of 1 µm.
Fog differs from stratus clouds in that its base is in contact with the earth’s surface, while the cloud base is above the earth’s surface. As the fog droplets increase, the fog can turn into a fine drizzle type precipitation. Water in the fog can settle on objects and form atmospheric sediment. Icing is a particularly dangerous phenomenon.
Ice fog
It consists of ice crystals.
Orographic fog
It is created by cooling the humid air as a result of its lifting. They form in the mountains when the air rises along the slope.
Evaporation mist and bicycle touring.
They are formed by evaporation from a warmer water surface or a humid surface. The air heated from the surface of the water and saturated with water vapor rises, it rises, cools down, and the water vapor contained in it condenses. For the formation of this type of mists, a normal air temperature profile is needed in the ground/surface air layer with a relatively large vertical temperature gradient (in the order of 2–4 ° C / m).
Advective fog and bike touring
This type of fog is produced by:
Cool air flows over much warmer water. This phenomenon occurs at the edges of the Arctic ice and is called “smoking” in the Arctic seas.
When the rain falls out of the upper layer of warmer air and passes through the cool layer lying near the ground. The evaporation of warm droplets creates a fog called rain. Fog from the evaporation of the sea is called sea smoke.
Road accident and bicycle touring – an incident in road traffic in which one or more road users are involved in an incident which resulted in an injury or death of a road user.
In such situations, you should immediately call the police, ambulance service and, if necessary, the fire brigade (when the number of injured people is large or they are trapped in vehicles, there is a fire hazard or oil derivative leakage has occurred).
According to the statistics of the World Health Organization (WHO), 35 million people worldwide have died since 1896 – when the first fatal accident was recorded as a result of a road accident. Currently, on the roads of all continents – according to the United Nations – annually 1.2 million people (one person every 30 seconds) are killed, and 30-50 million are injured. Most of the victims come from developing countries [2]. About 40 percent. of all those killed are children and adolescents. Millions of human corpses.
Most people are killed in road accidents in China. Death rate per 10 thousand vehicles last year in this country was 5.1, where the world average is 2.
British researcher Rune Elvik has developed a statistical analysis model known as the Power Model. Elvik used data from more than a dozen countries to estimate just how much the death toll is increasing with a certain increase in road speed. When the British government proposed raising the speed limit on motorways from 70 to 80 mph (from about 113 km / h to about 129 km / h), the researcher reported that even with an estimate of increasing the real speed by 3 miles per hour (approx. 5 km / h), approximately 25 fatalities and 100 more seriously injured persons can be assumed per year. The authorities withdrew from the idea. This is the end of bike touring,
If the car is traveling at 40mph (approx. 65 km / h), the risk of killing a pedestrian is 3.5–4.5 times higher compared to driving at 30mph (approx. 50 km / h) [4]. bicycle touring in the fog.
The US road safety working group has calculated that the percentage of pedestrians killed is 2.3% for cars traveling at 10-20mph (approximately 16-32 km / h). When the speed goes up to 40 miles (65 km / h) and above, 54% of people die. Where is going this bicycle touring? No human corpse.
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