This is the 6276th most frequent Russian word.
улично
The Russian word "улично" is an adverb meaning "street-like" or "relating to the street."
In this sentence, 'улично' is used as an adjective related to the street, implying its characteristic as lighting used outdoors.
Улично освещение было слишком ярким.
The street lighting was too bright.
Here, 'улично' modifies the verb 'проводимые', describing the events as being held in open, public, outdoor spaces.
Улично проводимые мероприятия привлекли множество людей.
Street events attracted many people.
In this usage, 'улично' combines with another word to describe a creative style inspired by urban, street culture.