Dehradun is relatively safe for tourists, but it's always wise to be cautious. The crime rates are generally low, but it's advisable to be attentive to your surroundings and avoid isolated areas, especially at night. Respectful behavior towards local customs and traditions is appreciated, and it's recommended to dress modestly, particularly when visiting religious sites. Take care of your belongings and avoid flashing expensive items to minimize the risk of theft. Overall, exercise common sense and practice basic safety precautions to have a secure and enjoyable trip.