Why are trains not afraid of snow?

Trains are not afraid of snow because there are "sandboxes" on railway locomotives, which are filled with sand to increase the adhesion between wheels and rails. The sand in the sandbox is specially used for railway locomotives after specific screening and drying procedures. When necessary, sand can be sprinkled on the driving wheel through the throat, which can increase the wheel-rail adhesion and thus increase the traction.

The impact of heavy snow on traffic;

1. Aviation: The impact of snowfall on aviation is obvious. In snowy weather, the visibility of the airport is seriously reduced, which affects the sight of flight personnel. In addition, snow and ice will seriously endanger the safety of the aircraft in the take-off and landing phase, because snow and ice will reduce and slide the friction on the ground, and the aircraft will not be able to take off and land, thus causing flight delays.

2. Railway: If it snows heavily and the snow depth exceeds 20 cm, the snow will accumulate on the turnout rail and frog, which will affect the train passing through the turnout.

3. Traffic in the city: On snowy days, the roads are slippery, and the traffic in the urban area is slow, which is very easy to be congested. Riding a bicycle or motorcycle in snowy days is easy to slip, the car can't stop, and it is easy to get out of control, causing accidents such as sideslip and rear-end collision.

4. Expressway: In snowy weather, the transportation department will close the expressway as appropriate. This is because the speed of the expressway is relatively fast, and cars are prone to slip when driving on snowy roads, and accidents are prone to occur when encountering avoidance and overtaking.