Gas and dust in inclined orbits around binaries experience precession induced by the binary gravitational torque. The difference in precession between gas and dust alters the radial drift of weakly coupled dust and leads to the formation of dust traffic jams where the radial drift is minimised. I explore this new phenomenon using 3D SPH simulations and investigate its dependence on disc initial inclination and binary eccentricity. I will then present a new dust evolution model that takes the mutual gas and dust inclination into account and reproduce the SPH results, which provides a straightforward way to understanding dust traffic jams as a consequence of the drag torque exerted by the gas on the dust. Finally, I will present the results of radiative transfer post-processing of the hydro simulations and discuss possible observational implications of these dust traffic jams.