ELI5: Explain Like I'm 5

Traffic congestion

Traffic congestion means there are too many cars on the road. When this happens, it takes longer for the cars to get to their destination because the roads are so crowded. To fix this, people can take public transportation or bike instead of driving. Also, people can try to avoid rush hour times when a lot of people are driving at the same time. If fewer people are driving at the same time, there will be less traffic congestion.