A note on the weighted essentially non‐oscillatory numerical scheme for a multi‐class Lighthill–Whitham–Richards traffic flow model

In a recent paper, the weighted essentially non‐oscillatory (WENO) numerical scheme was applied to solve a multi‐class Lighthill–Whitham–Richards (MCLWR) traffic flow model (J. Comput. Phys. 2003; 191:639–659). We discuss and present an enhanced WENO scheme with Lax–Friedrichs flux splitting by improving the estimation of the minimal characteristic speed of the MCLWR model, which is based on a set of inequalities of eigenvalues.