In the USa Now over 560 sites Roundabouts:(环形路口) v aaSIDRA recognized by Highway Capacity Manual FHWA Roundabout Guide and local guides v Favourable results from field validation study Signals:(信号配时) North Carolina DoT has adapted aaSIDRA after detailed assessment of many well-known software packages We krow tillie For quick preview, press PgDn/PgUp akcelik associatesWe know traffic ... For quick preview, press PgDn / PgUp … In the USA ➢ Now over 560 sites ➢ Signals: （信号配时） ✓ North Carolina DOT has adapted aaSIDRA after detailed assessment of many well-known software packages ➢ Roundabouts: （环形路口） ✓ aaSIDRA recognized by ▪ Highway Capacity Manual ▪ FHWA Roundabout Guide and local guides ✓ Favourable results from field validation study