What protective measures should we take if we encounter heavy rain or hail?

Disaster protection knowledge from heavy snow, heavy rain and dense fog. Blizzard and hail are relatively common. Although they may not necessarily cause disasters, you should also pay attention to protecting yourself: l. On snowy days, be sure to add layers of clothing and keep warm; reduce outdoor activities to avoid frostbite. 2． When hail falls, you should take shelter indoors; if you are outdoors, use rain gear or other substitutes to protect your head, and move indoors as soon as possible to avoid injuries. When heavy rains fall continuously in an area within a short period of time, the river water will rise violently, overflowing the dams, submerging farmland and villages, and washing away roads, bridges, and houses. This is a flood disaster. When a flood occurs, how can you save yourself? l． If you are threatened by floods, if you have enough time, you should move to hillsides, highlands, etc. in an organized manner according to the predetermined route; if you are caught off guard and are surrounded by floods, you should try your best to use boats, rafts, door panels, wooden beds, etc. Make water transfers. 2． When the flood comes too fast and there is no time to move away, you should immediately climb onto the roof, tall building, big tree or high wall to take temporary refuge and wait for rescue. Do not swim alone and transfer. 3. In mountainous areas, if it rains continuously, flash floods are likely to occur. In this case, you should pay attention to avoid crossing the river to prevent being washed away by flash floods, and also pay attention to prevent injuries from landslides, rolling rocks, and mudslides. 4. If you find that the high-voltage power line tower has collapsed or the wires are hanging down or broken; stay away from danger and do not touch or approach to avoid electric shock. 5. After the flood, it is necessary to take anti-epidemic drugs and do a good job in hygiene and epidemic prevention to avoid the occurrence of infectious diseases. Prevent the hazards of dense fog. A large number of small water droplets or ice crystal particles are suspended in the air near the ground, making people's vision blurred. When the horizontal visibility distance drops below 1,000 meters, it is called fog. Fog is divided into grades. When the visibility distance is less than 1000 meters and more than 5000 meters, it is called light fog; when the visibility distance is less than 500 meters, it is called heavy fog; when the visibility distance is less than 200 meters, it is called dense fog. Protective measures against fog disasters: Try not to go out. When you must go out, wear a mask to prevent inhaling toxic gases. · Try to minimize activities in the fog and do not exercise in the fog. ·Pedestrians should be careful when crossing the road and watch the passing vehicles clearly. ·Slow down when driving or riding a bicycle, obey the instructions of the traffic police, do not rush to get on the bus (boat), and do not crowd at the ferry when the ferry is suspended. How to pay attention to safety when riding a bicycle in rainy and snowy weather? When riding a bicycle in rain or snow, you should also pay attention to the following points: l. If it rains while riding, don't ride hard just to avoid getting caught in the rain. 2． When riding a bicycle on rainy days, it is best to wear a raincoat or poncho. Do not hold an umbrella in one hand and hold the handlebars in the other. 3. When riding in snow, don’t overinflate your bicycle tires. This can increase friction with the ground and make it less likely to slip. 4. When riding in snow, you should keep a large distance from vehicles and pedestrians in front of you. 5. When riding in snow, you should choose a flat road with no ice and shallow snow layer. Do not slam on the brakes, do not make sharp turns, and the angle of the turns should be as large as possible. 6. Rain and snow weather.

The road is muddy and slippery, so you need to concentrate more on riding a bicycle and be ready to deal with emergencies at any time.