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The other half of a dashboard: marks that report what the driver has switched on, or label the switch itself. The lighting symbols are readable from their geometry once the rule is known — a headlamp shape with straight rays is main beam, the same shape with rays sloping down is dipped, a wavy line crossing the rays is fog — and the colours separate them again, blue being reserved by regulation for main beam alone. The climate and convenience controls follow the same principle of depicting the thing: recirculation is an arrow that stays inside the car, a demister is wavy arrows rising through a screen, and whether that screen is drawn curved or rectangular says which one it is.
A blue headlamp with straight horizontal rays: high beam is on.
A green headlamp with rays angled downward: normal headlights.
A green lamp with a wavy line cutting across its straight rays.
An amber lamp with rays angled the other way, crossed by a wave.
A green pair of lamps facing outward: position lights only.
A flashing green arrow — and a fast flash means a bulb has failed.
A red triangle outline: both indicators at once.
A curved rectangle with three wavy arrows rising through it.
A straight-sided rectangle with three wavy arrows: the heated rear window.
A car in profile with an arrow curling round inside it.
A speedometer outline with an arrow, or the word SET.