Piracicaba is a fairly safe city, but like any place, caution should be exercised. The crime rate is lower than in other major Brazilian cities, but incidences of petty theft can still occur. Always be aware of your surroundings, especially at night. Be sure to keep your personal belongings close, avoid isolated areas, and don’t display flashy jewelry or electronics in public. It's recommended to use Uber or taxi instead of public transport during the night hours. While locals are generally friendly and helpful, it's always a good idea to learn some basic Portuguese phrases for emergencies.