Vehicles　are　often　occur　stopped　idling　on　urban　roads　which　leads　to　an　increase　in　travel　costs　for　users,　such　as　travel　time,　vehicle　fuel　consumption,　and　vehicle　exhaust　emissions.　What　are　the　characteristics　of　stopped　idling　of　the　vehicles　in　the　urban　expressway　toll　gate　which　is　the　key　node　of　urban　road　traffic　travel?　This　paper　tries　to　answer　the　question.　The　characteristics　of　stopped　delay　and　stopped　idling　emissions　of　vehicles　that　passed　through　the　expressway　toll　gate　were　analyzed　based　on　the　video　bayonet　data.　The　Beijing　Jingtong　Expressway　Bailiqiao　Toll　Gate　is　selected　for　a　case　study.　Results　show　that　26%　of　the　vehicles　have　stopped　delay　and　the　average　stopped　delay　of　the　vehicles　is　6 s.　The　average　daily　fuel　consumption,　average　daily　fuel　cost,　and　average　daily　exhaust　emissions　of　the　stopped　idling　vehicles　were　respectively　13.21　L,　83.76　yuan,　and　95.86 kg　based　on　the　empirical　model.　The　research　results　are　of　great　value　for　alleviating　the　vehicles　stopped　idling　state　of　the　urban　expressway　toll　gate　and　can　lay　a　good　theoretical　foundation　and　data　support　for　promoting　the　use　of　the　Electronic　Toll　Collection.　©　2022,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.