Duba zuwa ga sashi a kasa, sa'an nan kuma amsa tambaya daga baya a cikin wannan harshe kamar yadda sashi: Passage: A da yawa freeway kayayyakin more rayuwa bottlenecks ne sosai kusa da juna. A congestion juna wanda aka daidaita kwarara maida hankali ne akan biyu ko fiye bottlenecks ake kira wani fadada juna (EP). An EP iya ƙunsar aiki tare kwarara kawai (da ake kira ESP: fadada aiki tare kwarara juna)), amma kullum m motsi jams siffar a cikin aiki tare kwarara. A cikin wadanda lokuta da EP ake kira EGP (Fadada Janar juna) (duba Figure 10). Tambaya: Menene cikakken sunan ga raguwa EGP?
Ƙaddamar da Tsarin Gabaɗaya