You drive the speed you feel you can drive without undue risk to others, those around you may do the same. I take the exceptional viewpoint that neither of you

You drive the speed you feel you can drive without undue risk to others, those around you may do the same. I take the exceptional viewpoint that neither of you are necessarily 'nuisance.' Reasonable rate of speed depends on vehicle type/design, driver skill, sobriety, wakefulness, attentiveness, safety features of those on the road, density of traffic and environmental conditions. Reasonable rate of speed does not depend on whatever arbitrary number is on a sign.