For an experienced driver, what is the duration of the roadside licence suspension for a first offence?

Answer: D — 3 days

An experienced driver would only have their licence suspended for 3 days for a first offence. This is because they are expected to have a good understanding of road laws and should not make repeated mistakes. Option A and B may be incorrect because they are quite long suspensions and could be associated with more serious offences. Option C may also be incorrect as it is a much longer suspension than option D, and may be a penalty for a more severe first offence.