  We analyze the case of run-and-tumble particles pushed through a rugged
channel both in the continuum and on the lattice. The current characteristic is
non-monotone in the external field with (1) the appearance of a current and
nontrivial density profile even at zero field for asymmetric obstacles, (2) the
current decreasing with persistence at small field and increasing with
persistence at large field. Activity in terms of self-propulsion increases the
maximal current and postpones dying. We give an effective theoretical
description with wider validity.
