Explain, with a diagram,how 2 plane mirror could be fixed at a dangerous T-junction so that a motorists approaching the junction could see all other traffic.

To explain how to fix two plane mirrors at a dangerous T-junction, I'll describe the process step by step and provide a diagram to visualize the setup.

1. Start by identifying the location for mounting the mirrors. The mirrors should be placed on either side of the T-junction, ensuring they have a clear line of sight to all approaching traffic.

2. Position the first mirror on the left side of the junction. Mount it on a sturdy bracket or pole, at a height that provides an unobstructed view for motorists.

3. Angle the first mirror at 45 degrees, facing towards the right side of the junction. This angle will help maximize the field of view in both directions.

4. Once the first mirror is securely mounted, position the second mirror on the right side of the junction, directly across from the first mirror.

5. Angle the second mirror at 45 degrees, facing towards the left side of the junction. This mirror will reflect the image from the first mirror, allowing motorists approaching from the opposite direction to see the traffic.

6. Ensure both mirrors are securely fastened to their respective mounts, ensuring stability and durability.

Here is a simple diagram to illustrate the setup:

```
First Mirror Second Mirror
+-----------------+
| |
| |
| |
| |
| T-Junction |
| |
| |
| |
+-----------------+
```

In this diagram, the mirrors are indicated by rectangular shapes placed on either side of the T-junction. The angled lines represent the reflection of the traffic that can be seen in each mirror.

By fixing two plane mirrors in this manner, motorists approaching the junction will be able to see the traffic in both directions, thereby increasing their awareness and improving safety.