Vaughan is considered a very safe city in Canada with a very low crime rate. It's a well-planned, well-lit city with a responsive police service. The residents are generally friendly and willing to help if needed. Whether it's day or night, you should feel quite secure while traveling alone. Public transportation is reliable and safe, and there are plenty of safe places to visit. Always remember to use your common sense as you would do in any other place, but overall, Vaughan is a safe destination for solo female travelers.