How to do the effect of traffic?

I don't know if you are talking about pictures or videos. The following is what I know, for reference only.

1. If it is a picture, it is easy to take this effect if the following conditions are met.

? First, the target moves at high speed

? B, slow down the camera shutter to make the exposure time longer.

? desensitization

2. If you are talking about video.

? That should belong to time-lapse photography.

? Time-lapse photography is a photography technique that takes an image or video at a low frame rate and then plays the image at a normal or faster rate. In time-lapse photography video, the slow change process of an object or scene is compressed into a very short time, showing a strange and wonderful scene that is usually imperceptible to the naked eye. Time-lapse photography can be regarded as the opposite of high-speed photography. Time-lapse photography is usually used to shoot urban scenery, natural scenery, astronomical phenomena, biological evolution and so on.

Time-lapse photography needs a camera that can shoot in fixed the picture, a time-delay automatic controller, a regulated power supply, an illuminating lamp and an illuminating lamp (instead of sunlight) to shoot in a constant-temperature photography room. When shooting, we should also pay attention to the influence of temperature, humidity and illumination time on the subject, and control the moving rhythm of the "lens".

? Time-lapse photography you can go to Baidu Encyclopedia, where the information is relatively complete, and I will only talk about some of it here.

? I hope I can help you.