The closer the range of vision, the slower our speed should be.
Under low lighting conditions, use high beam where you won't blind other road users.
Windows:
Keep windows clean which will reduce glare.
Switch on demisting when necessary.
Cabin:
Keep internal cab lights low.
Switch off cabin light.
Make sure the dashboard lights are low (should change to low automatically when headlights are switched on).
Dashboard:
Do not place anything reflective on the dashboard.
Do not shine the dashboard with any polish. Dashboard surface should be matt and not glossy.