A few minutes late, Logan, 7, charges down a long hallway at the city’s Transit Museum and practically dives onto the floor of a classroom.

“Logan!” hollers Connor, 6.

He and two other boys, Dylan and Alex, both 8, holler and clap greetings. But they give Logan no more than a fleeting glance. All four have autism spectrum disorder, and do not practice ordinary social conventions, like direct eye contact.

Still, they know a fellow traveler.

For years, the Transit Museum has been a destination for families of children who have autism, drawn to its fleet of vintage, restored trains parked in the decommissioned station in Downtown Brooklyn that is the museum’s home. There are also ancient turnstiles and ticket chopping machines, old signals and undercarriages, even shells of buses.