Synonyms of congestion
bottleneckA bottleneck is a place where a road becomes narrow or where it meets another road so that the traffic slows down or stops, often causing traffic jams.
• a town-centre bottleneck
blockhold-upobstaclecongestionobstructionimpedimentblockagesnarl-up (informal, British)(traffic) jam
• a nine-mile traffic jam
Thesaurus for congestion from the Collins English Thesaurus