Does anyone know anything about the women's 4x400 relay?

Short track speed skating wins by ranking, and the competition system adopts elimination system. The first is the group preliminaries, and the top 2-3 players enter the next round, that is, the semi-finals; By analogy, the top 2-3 players in each group will enter the semi-finals, and the top 2-3 players will enter the finals. Usually there are only four people in the 500-meter, 1000-meter and 1500-meter finals, and there may be as many as six people in the 3000-meter finals. Although there is no time to race, runners still need to start from different positions on the runway at the same time, so the number of passes should be decided by lottery. You can overtake your opponent at any time during the slide. The competition venue is 30× 60m, and the length of each lap of the runway is11.12m ... Black rubber blocks are placed at the corners at both ends of the venue as marking lines, and athletes are not allowed to slide into the marking lines. There is no sign line in the straight-ahead area, so you can slide at will.

For safety reasons, all athletes must wear the following equipment:

1) Short track speed skating safety helmet shall conform to current ASTM standards. Helmets must have a regular shape without protrusions, and the current standard will take effect on July 1999+0.

2) Cut-resistant gloves or mittens made of leather, or synthetic gloves without wool.

3) Leggings made of durable materials with anti-cutting and anti-pricking.

4) Abide byNo. 97. 1402 MU Safety Competition Clothing (this rule will take effect on June 1 99965438+1October1).

5) Long-sleeved trousers and jumpsuits.

6) padded or padded hard shell kneepads.

7) The roller skate tube must be closed, and the blade root must be circular arc. Minimum radius10 mm. The knife tube is fixed on the shoe at least at two points, and there are no moving parts.

8) All athletes must wear neck protectors approved by China Skating Association.

The rule of 3000m was not found. ...

However, it seems that there is still an athlete's former athlete to push behind.

There are competitions in these two days.