In brief
Their function should be different from the night illumination of the road.
Useful to know
HELLA describes daytime running lights as a means of making the car more visible to others. This is a different task than illuminating the road surface with the main headlights. [1]
When reading the symbols on the dashboard, see what is actually included on the particular model. A glowing front unit is not evidence of all the other lights on the vehicle. For repair or replacement specify the exact type and management. The external similarity to a decorative LED line does not determine the purpose or full behavior of the system itself.
Sources
For further detail and to check the information: