Tomsk is a pretty safe place in terms of crime, especially if you stay within the downtown, don't look too freaky and don't show off with a lot of cash. Still, there are some useful rules:
You are obliged to carry your passport with you â though cases when you are actually asked for it are extremely rare.
Don't take walks outside downtown at night â it is better and faster to use a taxi and watch the night city from a car. Also, try to steer clear of intoxicated people wherever you meet them.
Don't stop private taxis on the street â there are plenty of reliable taxi companies in the city that can be easily called. Ask your guide or a Russian speaking friend for a phone number.
Try not to drink on the streets â or at least not to show it to local policemen â they are usually quite tolerant and in most cases will just tell you to stop drinking, still there may be accidents.
Call your Russian-speaking friends, your country's representative or your guide immediately if you think you may be in trouble with the police or anyone else.