Remember, cultural differences should not be an excuse to endure verbal or physical abuse. Depending on the situation, remove yourself as quickly as possible, confront the person, or ask for support from others. Trust your intuition. If you are offered a ride and you feel some anxiety, decline the offer. If you are in a setting that makes you nervous, leave.
Precautions also apply to social situations.
Most likely, you will find everyone you meet to be interesting and interested in you. However, you cannot make judgments about your safety based on another person's appearance or financial status. Initiate rather than react. This puts you more in control. Bring up other subjects, such as local politics or history.