Young children have less street sense than adults may think. Children under the age of 10 have limitations that prevent them from interpreting traffic like adults. No sense of danger. Children assume that if they see the car, the driver can see them. Difficulty judging speed and stopping distance.
Young children think cars can stop as quickly as they can.
Limited experience in traffic. Children don't perceive parked cars as visibility hazards. They also cannot quickly pinpoint sounds in traffic. Children tend to focus on one activity at a time and have difficulty crossing the street to retrieve a ball were oblivious to traffic. Children act on impulse.