tailgating

1. The act of driving dangerously close behind another vehicle. (uncountable) · Tailgating is the most common cause of rear-end collisions.
2. A tailgate party (social event held on and around the open tailgate of a vehicle) (uncountable)
3. The act of inappropriately gaining entry into a restricted area, past a checkpoint, by tagging along behind another person who is authorized. (uncountable)
4. Synonym of front running. (uncountable)

الجمع tailgatings