Research Article
The Implications of Converting a High-Volume Multilane Roundabout into a Turbo Roundabout
Table 7
Queue length, vehicle delay, and LOS (alternative design 1).
| Movement | Queue length (m) | Delay (second per vehicle) | Level of service (LOS) | | Traditional | Rotor | Traditional | Rotor | Change (±%) | Traditional | Rotor |
| NBR | 218.31 | 3.83 | 63.55 | 5.08 | −92.1 | F | A | NBT | 218.31 | 8.22 | 58.51 | 11.81 | −79.82 | F | B | NBL | 218.31 | 9.81 | 63.31 | 15.67 | −75.25 | F | C | WBR | 191.51 | 47.15 | 56.18 | 137.16 | +144.14 | F | F | WBT | 191.51 | 518.61 | 54.1 | 80.02 | +47.91 | F | F | WBL | 191.51 | 518.81 | 55.85 | 71.68 | +28.34 | F | F | SBR | 258.94 | 0.18 | 96.73 | 2.65 | −97.26 | F | A | SBT | 258.94 | 2.04 | 97.9 | 6.55 | −93.31 | F | A | SBL | 258.94 | 3.30 | 96.6 | 8.61 | −91.09 | F | A | EBR | 412 | 41.64 | 65.1 | 120.83 | +85.61 | F | F | EBT | 412 | 551.31 | 59.21 | 72.51 | +22.46 | F | F | EBL | 412 | 551.25 | 60.57 | 64.17 | +5.94 | F | F | Roundabout | 270.19 | 180.33 | 61.62 | 48.72 | −20.93 | F | E |
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