  We consider the Follow-The-Leader approximation of the Aw-Rascle-Zhang (ARZ)
model for traffic flow in a multi-population formulation. We prove rigorous
convergence to weak solutions of the ARZ system in the many particle limit in
presence of vacuum. The result is based on uniform $\mathbf{BV}$ estimates on
the discrete particle velocity. We complement out result with numerical
simulations of the particle method compared with some exact solutions to the
Riemann problem of the ARZ system.
