What are the "black and white holes" on the road? You can't just hide from them!

Tunnel entrance and exit sections

Why do accidents happen so frequently?

3 recent traffic accidents

The reasons are exactly the same

Let’s watch together

Accident 1

Recently, in Xi'an, Shaanxi Province, when Lu was driving his car out of a tunnel, his eyes were stimulated by the strong light outside the tunnel and had a brief visual blind spot . In addition, improper operation caused the vehicle to lose control, hit the left tunnel wall, and then hit the heavy truck on the right, causing damage to both vehicles.

Accident 2

When the two cars were driving to the entrance of Hongyan Tunnel on the Lingshan section of the Rongwu Expressway in Shanxi, the light suddenly dimmed and the drivers failed to notice an accident that had occurred ahead in time, and they rear-ended the car in front, causing a second accident.

Accident 3

Also because of the lack of adaptation to the light after entering the tunnel , a small car suddenly braked after entering a tunnel on the Daguan Expressway in Xinfeng section of Jiangxi Province . The large truck behind it was unable to avoid the car and rear-ended it.

When driving during holidays, especially on highways, you will inevitably pass through tunnels. If you pass through a tunnel during the day , due to the large difference in light inside and outside the tunnel, the tunnel entrance is often dark, while the exit is a dazzling white light, which is like a "black hole" and a "white hole" . At this time, it takes a few seconds for the eyes to adapt to this change in light and darkness. Therefore, traffic accidents are prone to occur at the entrance and exit of the tunnel.

There is no way to simply avoid the “black and white double holes”, but you can reduce accidents through driving skills.

Tunnel driving

What to do when you encounter “black and white double holes”?

Turn on low beam

Before entering a tunnel, you should follow the speed limit signs, slowly reduce your speed in advance , keep a safe distance from the vehicle in front, and turn on the low beam.

Adjust your sight

Once you enter the tunnel, do not panic during the period of "dark adaptation" of your eyes. Adjust your sight focus to the far end of the tunnel, do not pay attention to the tunnel walls on both sides, and maintain a constant speed in the original lane.

Keep safe distance

Maintaining a safe distance is the most direct and effective way to prevent rear-end collisions.

No lane change

The lane dividing line in the tunnel is a single solid white line and lane changes are not allowed.

Steadily accelerating

When exiting a tunnel , you can wait until your eyes have completed "light adaptation" and your vision has recovered, and then accelerate when you see the speed limit removal sign .

What should you do if you encounter an accident in a tunnel or on the highway?

9-word rule for handling traffic accidents

Whether you encounter a traffic accident in a tunnel or on the highway, you should follow the 9-word rule to avoid secondary accidents:

1. Pull over

Turn on the hazard warning lights, move the vehicle to the emergency lane (if in a tunnel, please leave the tunnel first) , and park by the side of the road. If the vehicle cannot be moved, please place a triangular warning sign 150 meters behind the vehicle.

2. Evacuate people

In a tunnel, people should evacuate to safe places on both sides of the tunnel wall; on a highway, people should evacuate outside the guardrail and never stay in the car or on the driving lane . If the car behind fails to brake in time, the consequences will be disastrous.

3. Alarm immediately

After taking protective measures, call the police immediately. If someone is injured, call 120 for emergency assistance at the same time.

When there is no mobile phone signal in the tunnel, you can use the manual alarm phone, manual alarm button, etc. in the tunnel .

How do you clearly state your location when calling the police on the highway?

1. Understand the kilometer sign: On the central isolation strip of the highway, there is usually a kilometer sign every kilometer .

The kilometer sign has the current location in kilometers on the top and the highway number on the bottom. It reads: S3500 Highway 46 kilometers.

2. Understand the 100-meter signs: On the corrugated guardrail next to the emergency lane, there is usually a 100-meter sign every 100 meters.

The number on the top of this 100-meter sign is the number of hundred meters, and the number below is the number of kilometers of the current highway. The reading of this sign is: 46 kilometers 100 meters.

The combination of the two signs can accurately locate the current position: S3500 Expressway 46 km 100 m . When calling the police for help, if you can't tell whether it is going up or down, just say where you got on the highway and where you are going.

National Day holiday is coming

Visiting relatives and friends, traveling by car

The expressway also ushered in a wave of traffic peak

Are you stuck in traffic?

It is estimated that during the National Day holiday, the average daily traffic volume of national highways will be about 61 million vehicles, which is expected to set a record high for the same period in history. On October 1, the first day of the holiday, the traffic volume of highways is expected to reach its peak, with 9-12 o'clock being the peak period for outbound traffic, and the peak occurring at 10-11 o'clock.

Remember the 12-word rule when stuck in traffic

If you encounter a slow-moving queue ahead of you, you must slow down, signal early, leave space, look ahead and behind , and leave a safe reaction distance for yourself and other vehicles.

When can I open the window to get some fresh air when I’m stuck in traffic?

🚗It is recommended to close the windows when in short-term traffic jams or waiting at red lights.

When traffic is congested, cars will burn a lot of gasoline when slowing down, shifting gears, starting and accelerating . At this time, the distance between cars is small, and the inhalable particulate matter in the air is more than 20 times more than usual.

🚗When stuck in traffic or standing still for a long time, do not close the car windows and turn on the air conditioner.

If the car is started for a long time but not moving, the windows should be opened to prevent suffocation caused by exhaust reflux . Also, do not sleep in a car with closed doors and windows and the air conditioner on. When the car is stopped and the air conditioner is turned on, the windows should be opened a little to prevent carbon monoxide poisoning.

Holiday self-driving tour

Safety first

National Emergency Broadcasting

Wish you a safe journey

Source: National Emergency Broadcasting Comprehensive CCTV News Client, Shanxi Traffic Police, Life Times, Ministry of Emergency Management

Producer: Wu Chuang

Editor-in-Chief: Sun Shengnan

Editor: Na Lanxin