Traveon Jamel Jordan LeBlanc, 12, was probably hit by multiple cars on the Gulf Freeway before dawn Thursday, the Houston Chronicle reports.
Police are investigating the possibility it was not the first time he ran into traffic, a department spokesman said Saturday.
So far police have found no witnesses to the accident, but several youths who knew LeBlanc have come for ward to say he made a game out of dodging cars, the newspaper said.
One sixth-grader said that to LeBlanc, running through traffic was "like a game of football, except with cars."
Another student's mother said the dead boy once dared her son to dash across the highway, which runs just feet away from the school bus stop.
One commuter told the newspaper he reported a boy running across the same stretch of highway to police several weeks ago.
But the youth's friends say he was more likely running away from bullies hassling him at the bus stop.