Is it mandatory to turn on the bus's front headlights also during the day?

1. AYes – on urban service lines, when there are passengers in the vehicle.
2. BNo, except on inter-urban lines.
3. CYes, but only on inter-urban roads from 1 November to 31 March of the following year.
4. DYes – from 1 November to 31 March every year.

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