Symbol 3605 from ISO 7000 - Title/Meaning: Alcohol interlock Function/description: To identify the control for initiating an alcohol test of the driver. To indicate the operational status of the alcohol interlock device or that an alcohol test of the driver is required.
pay attention to orientation of symbolAdditional information: 
A positive test activates the alcohol interlock device and prevents the vehicle from being started.
Own work using: iso.org/obp/graphics/grs/0322a765-5f9e-4753-8cb6-0be6de65e2d8 200.png
Vectorization:  Mrmw