5. Pedestrian Behavior Tags

Behavior	Explanation
Trip	onto driving lane
Fall	onto driving lane
Along lane	along a lane instead of crossing
Zig-zag	abrupt alternating left or right turns
Brisk-walk	walk fast
Group-walk	walk in a group
Group-disperse	initially together and disperse due to traffic, can mean part of the group crosses and part of the group chooses not to
Re-group	the group moves back together
Dog-walk	with a dog
Retreat	walk backwards
Speed-up	sudden change
Slow-down	sudden change
Pause-start	stop momentarily and proceed afterward
Cross-without-crosswalk	not crossing at marked crosswalk, whether that be at a mid-block or over anything
Cross-on-red	crossing on red light
Drop object	onto driving lane
Pickup object	onto driving lane
Pop-out occlusion	appears suddenly behind another object
Crawling	moving slowly, often on hands and knees
Dancing	moving rhythmically or performing dance-like motions
Crosswalk-detour	initially on the crosswalk but leaves to take a shortcut
Gesturing	using hand or body movements to signal or communicate with anything except incoming vehicle (waving at someone across the street)
Back turned	against incoming vehicle
Ignore-traffic	​crossing or walking in front of moving vehicles, ignoring them
Instant Reaction
Swerve	abrupt change in direction
Break	abrupt stop at the lane boundary and yield
Flinch out	jump out of ego’s lane
Flinch in	jump into the ego’s lane
Frozen	stop in the middle of a lane
Skid	loses traction or sliding on lane
Dragged on ground	being dragged along the ground
Collision
Collision	leading to injury
Near-miss	nearly missing a collision
Run into traffic	creating near-miss/collision with vehicles
Thrown back	thrown backward by vehicle collision
Interaction
Make stop	gesturing to vehicle to stop
Make go	gesturing to vehicle to go
Aggression	aggressive gestures to vehicle
Assault	assault the vehicle
Climbing onto car hood	climbs onto the car hood
Observing	standing still and observing vehicle’s behavior
Mental State
Looking	at the oncoming traffic (>1s)
Glancing	at the oncoming traffic (<1s)
Not looking/glancing	at the oncoming traffic
Fixated not at incoming vehicle	Fixating attention at any object except incoming vehicle
Preoccupied	performing a task such that attention isn’t given to the incoming vehicle
Agitated	showing agitation
Cautious	showing careful deliberation
Intention
Cross	intends to cross
Not-cross	doesn’t intend to cross
Not-sure-cross	not sure if intends to cross