New Site
Site Category: (None)
Roundabout
Vehicle Movement Performance
Mov ID Turn INPUT VOLUMES [Total veh/h DEVAND FLOWS [Total veh/h DEV. Sat. HV] % Deg. Sat. v/c Aver. Level of Delay sec 95% BACK OF QUEUE [Veh. veh Prop. Que Effective Stop Rate Aver. No. Cycles Aver. Speed mph
South: Chicago Avenue
3 L2 41 9.0 45 9.0 0.199 5.9 LOS A 1.1 29.7 0.43 0.28 0.43 22.9
8 T1 126 5.0 137 5.0 0.199 5.7 LOS A 1.1 29.7 0.43 0.28 0.43 23.0
18 R2 6 20.0 7 20.0 0.199 6.3 LOS A 1.1 29.7 0.43 0.28 0.43 22.6
Approach 173 6.5 188 6.5 0.199 5.7 LOS A 1.1 29.7 0.43 0.28 0.43 22.9
East: Waterman Drive
6 T1 13 0.0 14 0.0 0.043 4.5 LOS A 0.2 5.4 0.50 0.34 0.50 23.1
1 L2 9 0.0 10 0.0 0.043 4.5 LOS A 0.2 5.4 0.50 0.34 0.50 23.1
16 R2 11 11.0 12 11.0 0.043 5.1 LOS A 0.2 5.4 0.50 0.34 0.50 22.8
Approach 33 3.7 36 3.7 0.043 4.7 LOS A 0.2 5.4 0.50 0.34 0.50 23.0
North: Chicago Avenue
7 L2 6 0.0 7 0.0 0.305 6.1 LOS A 1.9 50.9 0.30 0.14 0.30 22.9
4 T1 168 6.0 183 6.0 0.305 6.3 LOS A 1.9 50.9 0.30 0.14 0.30 22.9
14 R2 125 8.0 136 8.0 0.305 6.4 LOS A 1.9 50.9 0.30 0.14 0.30 22.6
Approach 299 6.7 325 6.7 0.305 6.4 LOS A 1.9 50.9 0.30 0.14 0.30 22.8
West: Waterman Drive
5 L2 144 11.0 157 11.0 0.246 6.6 LOS A 1.4 37.3 0.46 0.32 0.46 22.4
2 T1 4 0.0 4 0.0 0.246 6.1 LOS A 1.4 37.3 0.46 0.32 0.46 22.5
12 R2 60 0.0 65 0.0 0.246 6.1 LOS A 1.4 37.3 0.46 0.32 0.46 22.2
Approach 208 7.6 226 7.6 0.246 6.4 LOS A 1.4 37.3 0.46 0.32 0.46 22.4
All Vehicles 713 6.8 775 6.8 0.305 6.2 LOS A 1.9 50.9 0.39 0.24 0.39 22.7
Site Level of Service (LOS) Method: Delay & v/c (HCM 6). Site LOS Method is specified in the Parameter Settings dialog (Site tab). Roundabout LOS Method: Same as Sign Control
Roundabout LOS Method: Same as Sign Control.
Vehicle movement LOS values are based on average delay and v/c ratio (degree of saturation) per movement.
LOS F will result if v/c > 1 irrespective of movement delay value (does not apply for approaches and intersection).
Intersection and Approach LOS values are based on average delay for all movements (v/c not used as specified in HCM 6).
Roundabout Capacity Model: SIDRA Standard.
Delay Model: HCM Delay Formula (Geometric Delay is not included).
Queue Model: HCM Queue Formula.
Gap-Acceptance Capacity: SIDRA Standard (Akçelik M3D).
HV (%) values are calculated for All Movement Classes of All Heavy Vehicle Model Designation.