That's an excellent and very specific question! Yes, such trash cans absolutely exist and are becoming more common in cities focused on public cleanliness and fire safety. You're describing a specialized type of public litter bin often called a "cigarette butt receptacle" or a "combination ash/trash unit.
These bins typically feature a distinct, often cylindrical or scooped, metal attachment at the top. This attachment is filled with sand or a non-combustible granular material. The purpose is twofold: first, the sand provides a safe medium to extinguish the cigarette ember completely, significantly reducing the fire risk of tossing a hot butt into a bin full of paper and other dry waste. Second, it contains the ash and butts neatly, preventing them from scattering in the wind and making disposal easier for maintenance crews.
You'll frequently spot them in high-traffic urban areas like outside office buildings, near public transport stops, in parks (especially near benches), and outside bars and restaurants. Their design addresses a major litter issue, as cigarette butts are one of the most commonly littered items worldwide. So, next time you're in a city center, look closely at public bins—you'll likely see these integrated ashtrays, a small but smart solution for urban waste management.