(NBC) -- A new University of Iowa study found parents play a key role in helping children learn how to cross busy streets.
Researchers watched parent-child duos cross a virtual road with continuous traffic.
Many parents told their kids to cross by saying, "Let's go," or began crossing the street without saying anything.
When parents gave constructive advice, like pointing out safety gaps in traffic, kids learned the skill faster and were more efficient.
Previous research showed most children don't fully grasp how to identify gaps in traffic and correctly time road crossings until they are 14-years-old.