Introducing Rodel Entry Capacity Calibration Arrival Turning Flows Traffic Flows Flow Modifiers Average Daily Traffic Time-sliced Profile Geometric Parameters Approach Geometry Leg name Graphical Geometry Editor Bearing Grade Separation G Approach HalfWidth V Entry Geometry Circulating Geometry Exit Geometry Capacity Modifiers Calibration Bypass Geometry Bypass Approach Bypass Entry Bypass Exit Accidents Accident Models Accident Geometry Economics |
Geometry > Approach Geometry > Number of Approach Lanes nv ## Number of Approach Lanes nvA maximum of 4 lanes (40 ft) is permitted. nv should not be greater than the number of entry lanes ne at the yield line. The HCM model does not use the number of approach lanes nv. For multi-lanes, the lane width is V / nv and this should not be less than about 10 ft (3 m) although capacity can be derived for lanes as narrow as 6.5 ft (2 m). The geometric model uses nv for checks and warnings. © Rodel Software Ltd |