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Anonymous users2024-02-07This is a distance measurement card, which can be used to see the distance from the car in front of you and avoid traffic accidents caused by the distance between the vehicles.
There are also some other traffic signs on the highway that are important and can be inconvenient if you don't pay attention.
1. Toll station information signs. Generally, there will be a toll booth on the right side of the street sign. At this time, you should slow down, keep the distance between vehicles, and follow the instructions at the toll booth to select the lane.
2. Harbor-style parking belt. The harbor parking strip extends to the outside of the road, allowing vehicles to park inside for a short break.
3. Lane reminder signs. Above the highway lane or on the road surface, there are lane signs (printed font on the road surface) at intervals. Include lane names, highest and lowest minimums.
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Anonymous users2024-02-06It is used to test the distance between the driver of the vehicle on the highway, when your car passes the 0m plate, look at the rear of the front car, if it has passed the 50m plate, it means that the distance between your car and the front car is more than 50m, if the rear of the front car has passed the 100m plate, it means that the distance between the car is more than 100 meters, and so on. If the distance between the vehicles is enough, the speed can be maintained, and if the distance between the vehicles is less than 50 meters, it is necessary to slow down and maintain the distance between the vehicles......
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Anonymous users2024-02-05It's all unclear. There are a total of 0m, 50m, 100m, and 200m street signs. Because you must keep the distance between vehicles when driving on the highway, the road sign is for the driver to make a reference for the distance between vehicles.
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Anonymous users2024-02-04Indicate the distance between the car and the workshop for the driver to choose.
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Anonymous users2024-02-03It is the distance between cars. The distance between the two vehicles is 200 meters.
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Anonymous users2024-02-02It is a way to measure the distance between cars on the highway, so that the driver can easily estimate the approximate distance between the car and the car in front. 0m, 50m, and 100m represent 0m, 50m, and 100m respectively, which is convenient for you to estimate the distance between you and other people's cars.
In addition to the distance measurement board, there is also a distance confirmation line on the surface of the road
1）.Thick white parallel lines are used to provide a reference for vehicle drivers to maintain a safe distance from the vehicle, and are used in conjunction with distance confirmation signs. It is located on the road section where overtaking, accident-prone or other needs are common.
The highway distance confirmation marking is used to ensure that when seeing this marking, the driver should keep a safe distance from the vehicle in front to avoid traffic accidents.
2）.The white polyline car is 300cm wide from the confirmation line, and the line is 40cm or 45cm wide, starting from the confirmation base point 0m, every 5 meters is set up, two are a group, and the interval is 50m, and five groups are set repeatedly, and multiple groups can also be set up according to the site. The white semicircle is set at a distance of 30 cm from the hemisphere of the confirmation line, and is set at 50 m intervals, and is generally set continuously in a certain section of the road.
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Anonymous users2024-02-01a. The car passes through the Second Yangtze River Bridge at a speed of 60km h, which is the speed of a certain section of the study without displacement, and it is the average speed.
Therefore a is not an instantaneous velocity.
b. Highway speed limit.
The velocity value of 120 km h on the sign is a certain position, and the velocity at this position indicates the instantaneous velocity Therefore, b is the instantaneous velocity
c. When taking off, leaving the ground at a speed of 60m s, indicating the speed of a position, is instantaneous speed, so C is instantaneous speed
d. The athlete hits the finish line at a speed of 12m s, which is the speed corresponding to a position, and it is to let the instantaneous speed be accepted, so D is the instantaneous speed
The choice of this question is not instantaneous speed, so choose a
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