Which of the following statements CANNOT be used to describe free flow speed $\left(u_{f}\right)$ of a traffic stream?
(A) $u_{f}$ is the speed when flow is negligible
(B) $u_{f}$ is the speed when density is negligible
(C) $u_{f}$ is affected by geometry and surface conditions of the road
(D) $u_{f}$ is the speed at which flow is maximum and density is optimum

Question ID - 156109 | SaraNextGen Top Answer

Which of the following statements CANNOT be used to describe free flow speed $\left(u_{f}\right)$ of a traffic stream?
(A) $u_{f}$ is the speed when flow is negligible
(B) $u_{f}$ is the speed when density is negligible
(C) $u_{f}$ is affected by geometry and surface conditions of the road
(D) $u_{f}$ is the speed at which flow is maximum and density is optimum