Causes of some traffic slowdowns

• Makes one
• Causes of some traffic backups
• Causes to coalesce
• Gets past the onramp
• Moves from a lane that's ending
• Goes from two lanes to one
• Combines into one company
• Meets & joins
• Consolidates

Wiktionary Word definitions in Wiktionary
n. (plural of merge English) vb. (en-third-person singular of: merge )