its corresponding patterns remains unclear. Several studies have shown that excluded volume interactions might considerably affect the formation of structures in these systems, leading to band-like patterns coexisting with lanes, polarized clusters, asters and vortices [@Schaller2010; @Schaller2010; @Schaller2011polar; @Kohler2011; @Farrell2012; @Bricard2015]. Despite some works dealing with excluded-volume effects [@Szabo2006; @Grossman2008; @Henkes2011; @Lam2015], whether aligning rigid-particle systems display the same pattern-forming mechanisms and critical properties as the original Vicsek model of point-like agents or not remains an open issue. From the theory side, a continuum formulation of a smooth version of the Vicsek-like model with density dependent self-propulsion velocity was proposed in [@Farrell2012]. This approach, motivated by previous work on MIPS, aims to capture particle interactions in an effective way, amenable to a continuum formulation. While the onset of flocking is unchanged by the density-dependent velocity effective interactions (sometimes called ’quorum sensing’), above it, in the ordered phase, interactions induce richer structure formation as compared to Vicsek-like models of point-like particles.

Here, we aim at characterizing the emergence of collective motion and out-of-equilibrium patterns in a system of aligning self-propelled particles with short-range repulsions. We introduce a model of polar self-propelled particles build as an extension of the paradigmatic Active Brownian 