  Field-road models are reaction-diffusion systems which have been recently
introduced to account for the effect of a road on propagation phenomena arising
in epidemiology and ecology. Such systems consist in coupling a classical
Fisher-KPP equation to a line with fast diffusion accounting for a road. A
series of works investigate the spreading properties of such systems when the
road is a straight line and the field a half-plane. Here, we take interest in
the case where the field is a cone. Our main result is that the spreading speed
is not influenced by the angle of the cone.
