The relationship between traffic flow rate (q) and density (D) is shown in the fugureThe shock wave condition is depicted by

Question

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flow changing from point 3 to point 7 (q3 < q7)

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flow with respect to point 1 (q1= qmax)

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flow changing from point 2 to point 6 (q2 > q6)

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flow with respect to point 4 and point 5 (q4 = q5)

1.	The relationship between traffic flow rate (q) and density (D) is shown in the fugureThe shock wave condition is depicted by
A.	flow with respect to point 1 (q1= qmax)
B.	flow changing from point 2 to point 6 (q2 > q6)
C.	flow changing from point 3 to point 7 (q3 < q7)
D.	flow with respect to point 4 and point 5 (q4 = q5)
Answer» C. flow changing from point 3 to point 7 (q3 < q7)

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