CVE30003 Roundabout Exercise Single lane roundabout Inscribed diameter = 40 m Entry lane width = 4 m No heavy vehicles Exercise. Solution Approach qe veh/h qc pcu/h qc pcu/s N 410 750 0.2083 E 650 450 0.1250 S 510 675 0.1875 W 740 540 0.1500 qe is the entering flow (veh/h) tf tc ? ? ? s s s 2.23 3.87 2.0 0.389 0.139 839 0.489 2.35 4.24 2.0 0.577 0.096 1031 0.630 2.26 3.96 2.32 from Table 1 from Table 2 from Table 4 from formula qc is the circulating flow in conflict with the entering flow (converted to pcu/h) = 3600 (1 - 00 000 0 + 0.5 000 0 )1048po- 00 ) For circulating flows at roundabouts Number of circulating flow lanes 1 2 > 2 ? kd 2 2.2 1 2.2 0.8 2.2 1 - 00 0000 Q = 1 - (1 - 00() 00 0000 ? 00= (1 - 00 0002 Slightly different results are obtained if you use Table 3 instead of the formula for q Exercise. Solution Approach qe veh/h qc pcu/h qc pcu/s 1 N E S W tf tc ? ? ? s s s from Table 1 from Table 2 from Table 4 from Table 3 Q x veh/h Q x veh/h