HCM 2010 Roundabout
13: W Thruston/E Thruston & SR 48
01/11/2023
| Intersection | ||||||
|---|---|---|---|---|---|---|
| Intersection Delay, s/veh | 8.8 | |||||
| Intersection LOS | A | |||||
| Approach | EB | WB | NB | SB | ||
| Entry Lanes | 2 | 2 | 1 | 1 | ||
| Conflicting Circle Lanes | 2 | 2 | 2 | 2 | ||
| Adj Approach Flow, veh/h | 549 | 1211 | 36 | 25 | ||
| Demand Flow Rate, veh/h | 576 | 1223 | 36 | 25 | ||
| Vehicles Circulating, veh/h | 0 | 31 | 562 | 1216 | ||
| Vehicles Exiting, veh/h | 1241 | 567 | 14 | 38 | ||
| Follow-Up Headway, s | 3.186 | 3.186 | 3.186 | 3.186 | ||
| Ped Vol Crossing Leg, #/h | 18 | 1 | 0 | 57 | ||
| Ped Cap Adj | 0.979 | 0.999 | 1.000 | 1.000 | ||
| Approach Delay, s/veh | 5.9 | 10.2 | 5.2 | 8.1 | ||
| Approach LOS | A | B | A | A | ||
| Lane | Left | Right | Left | Right | Left | Left |
| Designated Moves | LT | TR | LT | TR | LTR | R |
| Assumed Moves | LT | TR | LT | TR | LTR | R |
| RT Channelized | ||||||
| Lane Util | 0.470 | 0.530 | 0.470 | 0.530 | 1.000 | 1.000 |
| Critical Headway, s | 4.293 | 4.113 | 4.293 | 4.113 | 4.113 | 4.113 |
| Entry Flow, veh/h | 271 | 305 | 575 | 648 | 36 | 25 |
| Cap Entry Lane, veh/h | 1130 | 1130 | 1104 | 1106 | 762 | 482 |
| Entry HV Adj Factor | 0.952 | 0.954 | 0.990 | 0.990 | 1.000 | 1.000 |
| Flow Entry, veh/h | 258 | 291 | 569 | 642 | 36 | 25 |
| Cap Entry, veh/h | 1053 | 1055 | 1092 | 1094 | 762 | 482 |
| V/C Ratio | 0.245 | 0.276 | 0.521 | 0.587 | 0.047 | 0.052 |
| Control Delay, s/veh | 5.7 | 6.1 | 9.4 | 10.8 | 5.2 | 8.1 |
| LOS | A | A | A | B | A | A |
| 95th %tile Queue, veh | 1 | 1 | 3 | 4 | 0 | 0 |