When a driver tests positive in breathalyzer tests, traffic officers have the authority to **immobilize their vehicle**. This is because driving under the influence of alcohol is considered a very serious offense. The consequences of testing positive in these tests include:

- **Fines**.
- **Loss of points** on the driving license.
- **Possibility of temporarily losing the driving license**.
- **Risk of imprisonment** if the lives of others have been endangered.
- **Prohibition from continuing to drive** by the traffic officer.
- **Immobilization of the vehicle** until the effects of alcohol wear off.

Therefore, officers can not only sanction the driver but also have the ability to immobilize the vehicle to ensure road safety.