Ottawa is generally a safe city for solo female travelers. The local people are typically friendly and helpful towards tourists. Public transportation is reliable, well-regulated, and fairly safe to navigate alone, even at night. While it is generally safe, like in any city, it's advised to stay alert and practice standard safety precautions. Err on the side of caution in isolated areas and at night, especially if you're on foot. Ensure your accommodation is in a safe neighborhood and that it has secure entry systems in place.