The time at which motorists are required by law to switch their vehicles' lights on.
More example sentences
- As in Paris, they would be lit for 10 minutes every hour, from lighting-up time to 1am.
- We looked at lighting-up times, getting later and later with only a very few hours of twilight to play with.
- A better option is to fit a photo-electric switch which operates automatically, regardless of lighting-up times.