Review Article
Review of Roundabout Capacity Based on Gap Acceptance
Table 4
Calculation of entrance capacity under different flow rates on circulating vehicles (
, ).
| No. | q(veh/s) | alpha | λ(1/s) | βa | tc(s) | Eq. (14)(fixed tc) (veh/s) | Eq. (18)(veh/s) | Eq. (22)(veh/s) | Eq. (34)(veh/s) | FL in Equ. (35) | Eq. (35)(fixed tc)(veh/s) |
| 1 | 0.05 | 0.779 | 0.043 | 0.696 | 4.589 | 0.289 | 0.286 | 0.300 | 0.285 | 0.997 | 0.288 | 2 | 0.1 | 0.607 | 0.076 | 0.502 | 4.489 | 0.249 | 0.247 | 0.267 | 0.246 | 0.995 | 0.248 | 3 | 0.15 | 0.472 | 0.101 | 0.370 | 4.418 | 0.213 | 0.212 | 0.233 | 0.210 | 0.994 | 0.212 | 4 | 0.2 | 0.368 | 0.123 | 0.275 | 4.362 | 0.179 | 0.179 | 0.200 | 0.177 | 0.993 | 0.178 | 5 | 0.25 | 0.287 | 0.143 | 0.206 | 4.311 | 0.146 | 0.147 | 0.167 | 0.146 | 0.991 | 0.145 | 6 | 0.3 | 0.223 | 0.167 | 0.153 | 4.255 | 0.114 | 0.116 | 0.133 | 0.115 | 0.990 | 0.113 | 7 | 0.35 | 0.174 | 0.203 | 0.112 | 4.179 | 0.083 | 0.086 | 0.100 | 0.084 | 0.989 | 0.082 | 8 | 0.4 | 0.135 | 0.271 | 0.078 | 4.050 | 0.052 | 0.056 | 0.067 | 0.055 | 0.986 | 0.051 | 9 | 0.45 | 0.105 | 0.474 | 0.046 | 3.756 | 0.021 | 0.027 | 0.033 | 0.027 | 0.982 | 0.020 |
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