Volvo VNL 780 Operator's Manual page 135

INSTRUMENTS AND CONTROLS 125
Fog and Driving Lights
Fog and driving lights are wired so they are turned on only when the headlight control is
on. Fog lights are used with the low beam headlights. Driving lights are used with the
high beam headlights. Switching from low to high beam will automatically switch from
fog lights to driving lights. Driving and fog lights should be used when driving conditions
require additional lighting. The driving or fog lights should NOT be used in traffic where
they might distract other drivers thereby creating a safety hazard.
W3005410
VNM Fog and Driving Lights