Feng Yan saw things quickly, and finished reading them in just a few minutes, and then went to look at the photos of the scene.

Xiao Guo introduced the accident from time to time around the two, "The accident occurred on the cross-river bridge, and the car driven by the deceased deviated from the route, according to the eyewitnesses of the vehicle behind him and the video of the dashcam, it can be clearly concluded that his car slowly deviated from the line, and then broke through the guardrail and fell into the river, so it was concluded that he was fatigue driving." Although the vehicle behind had desperately honked its horn to remind the deceased, the wind on the cross-river bridge was already very strong, and there would be some tire noise during high-speed driving, so the deceased should not have heard it. At that time, the speed of the car was about 120k/h, and it was very dangerous to doze off at this time. ”

Feng Yan looked at the photo and asked, "Why is the number of kilometers calculated so accurately?" ”

Xiao Guo: "That's right, we determined the speed of the deceased during the accident through three aspects.

First, the car behind him at that time, that is, the witness who witnessed his death, drove at a speed of nearly 120 yards, and I heard him say that he was following the deceased's car on the high speed, and as soon as he got on the highway, he kept following the back of the deceased's car, sometimes fast and sometimes slow, but he had not been able to overtake the deceased's car, and after getting on the bridge, the car and road conditions were very good, so he turned on the cruise control and set the speed at 120 yards, and his car and the deceased's car have always maintained a constant speed distance since they got on the bridge. Judging by this, the deceased's car should have been at this speed at the time.

Second, we were surveying the scene with the traffic police department, and judging by the degree of damage caused by the front of the car hitting the guardrail, the speed of the car was probably so fast at that time.

Thirdly, and most importantly, after we salvaged the car, we invited relevant experts to conduct an examination, and found that the deceased had used the function of cruise control, and the fixed speed was exactly 120 yards.

Combining these three points, it is almost certain that the deceased was using the cruise control function to set the speed of the car at 120k/h. ”

Feng Yan muttered thoughtfully, "The speed of 120 yards is really fast." ”

Xiao Guo sighed, "Who said it wasn't, alas, this guy is really, what kind of fixed-speed cruise is on the highway, I'm easy to get distracted anyway, I'm quite tired when driving on the highway, and I happened to fall asleep on the bridge, and the survival rate of falling into the Yangtze River is too low, if I go to the bridge or after the bridge, I may be able to survive." ”

Feng Yan had a flash of inspiration in his mind, and asked, "Cruise control, I know, after this function is turned on, people will be easy to doze off?" ”

Feng Yan can't drive, he knows the function of cruise control, but this function is easy to doze off, he really doesn't know whether it's true or not.

Liu Zheng replied, "This is not necessarily, it depends on the individual, the function of the cruise design is actually really for driving high speed, people keep an angle for a long time to step on the accelerator leg will be sore, if you use the cruise at fixed speed, you can free your legs." ”

Xiao Guo nodded in agreement and said, "That's what you mean, but driving the highway itself is a very boring thing, there is a person around you to talk about it, if there is no one, you have to drive alone, the scenery along the way is almost the same, and because the speed is very fast, the mind has to be highly concentrated, there is a leg on the accelerator, fast and slow, but also to keep a little sober, if you open the cruise at a fixed speed, even the only opportunity to interact with the car is gone, not to doze off is strange."

But what you said is definitely true.,It's also different from person to person.,Personally, I don't like to use this function anyway.,It's easy to get distracted when you use it.,If you're too tired.,It's strange not to doze off.。 ”

Feng Yan repeated Xiao Guo's sentence "too tired", and then said to Liu Zheng, "If I remember correctly, I asked Cheng Fei in the morning, what time did Zhou Yang come back the night before the car accident, and she replied that it was more than 4 o'clock, this can be confirmed, I don't think she will lie." Arrived at home at 4 o'clock in the morning, and left the community at 8:10 a.m., except for the time to get up and wash, even if he fell asleep after returning home after the reception, Zhou Yang only slept a little more than 3 hours, and there was a high probability that it was less than 3 hours. So in other words, Zhou Yang drove the car in an extremely tired state the next day, and used a cruise at a fixed speed, which led to the accident, right. ”

Liu Zheng's glasses lit up and said, "Do you suspect that someone deliberately let him go home late that night, so as to increase the probability of him having an accident on the highway?" ”

Feng Yan frowned and shook his head and said, "This understanding is too far-fetched, if the murderer was hidden in the crowd of the party the night before, it was just one of the moves laid by the murderer, he couldn't guarantee that Zhou Yang would definitely fall asleep on the highway, and it happened to be when he crossed the bridge...... That's right! ”

When talking about the bridge, Feng Yan's eyes lit up and asked Xiao Guo, "Do you have a map of Yunhai City, bring one to me." ”

Xiao Guo found a map of Yunhai City and handed it to Feng Yan, Feng Yan spread the map on the table, and Liu Zheng and Xiao Guo came over.

"You see, Zhou Yang got on the highway from here at 8:50, according to the description of his company colleagues, he was going to Wanning City on a business trip that day, and Yunhai City and Wanning City are separated by a river, if you want to go to Wanning City, this is the only way, the length of this bridge on the river is about 6 kilometers, and it is very wide, which creates very good road conditions, plus there are not many cars that day, the weather is also very good, it is a sunny day, now the weather is relatively cold, I didn't sleep for a few hours at night, I drove the car in the sun, and then drove a cruise at a fixed speed, Naturally, it is easy to get sleepy.

Look at the highway on both sides of the road in the area outside of the bridge. ”

Liu Zheng said: "The highway before the bridge and the highway section that extends to Wanning City after that are lined with plains, most of which are still fields. ”

Feng Yan continued, "Yes, this shows that if the murderer wants to make Zhou Yang doze off and drive tiredly, so as to kill Zhou Yang, he must do it on the bridge, or start his murder plan, and this plan can be implemented automatically without the murderer's presence."

So now the scope of the murderer's murder method can basically be locked in some of the situations encountered by Zhou Yang after he went to the bridge, and these conditions must have trigger conditions, and one of the conditions that must be met is time. ”

Xiao Guo asked suspiciously, "Time?" ”

Feng Yan: "That's right, it's time, what if...... No, I think the murderer must have used some kind of trick that could make Zhou Yang inevitably or most likely doze off, and then calculated the time, triggered it when Zhou Yang walked 6 kilometers on the bridge, and then let Zhou Yang drive down the bridge by himself, thus dying. ”

Xiao Guo said, "But we have done an autopsy, and there is no sign of poisoning or taking sleeping ingredient drugs in the deceased's body, so it can't be hypnotized." ”

When Feng Yan heard Xiao Guo say this, he suddenly turned his head to look at him, paused for two seconds and said, "Hypnosis~ It's a bit interesting." ”

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