Symbol 0082 from ISO 7000 - Title/Meaning: High beam; main beam Function/description: To identify the control that activates the moderate intensity, forward illumination. To indicate the operational status of the low beam function.
Additional information: 
On road vehicles: 

framed areas of this symbol may be solid
the control operating alternately the high beam and the low beam may include two symbols, one for each of the positions: high beam, low beam
Own work using: iso.org/obp/graphics/grs/0807fd40-15f9-4eaf-aab8-d4d6e75e91fd 200.png
Vectorization:  Mrmw