Read the dictionary definition of traffic. All definitions for this word.
1. social or verbal interchange (usually followed by `with')
2. buying and selling; especially illicit trade
3. the amount of activity over a communication system during a given period of time
1. heavy traffic overloaded the trunk lines
2. traffic on the internet is lightest during the night
4. the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time
5. trade or deal a commodity
1. They trafficked with us for gold
6. deal illegally
1. traffic drugs