  The mildly relativistic jets of SS\,433 are believed to inflate the
surrounding supernova remnant W\,50 depositing in its expansion possibly more
than 99% of their kinetic energy (\cite[1998]{Dub98}). Where and how this
transformation of energy is curried out, it is not yet known. What can we learn
from it that the jets decelerate and the deceleration is non-dissipative, i.e.
radiatively dark. In this paper we unclose the observed deviations of the
precessing radio jets of SS\,433, within a few arcseconds from a jets source,
from the ballistic track, described by the kinematic model, as a signature of
the deceleration which, on other hand, issues from the jets colliding with
ambient medium. For that we model kinematics of these colliding jets. The ram
pressure on the jets is estimated from the observed profile of brightness of
synchrotron radiation along the radio jets. We have found that to fit observed
locus the radio jets should be decelerated and twisted, additionally to the
precession twist, mostly within the first one-fifth of precession period, and
further they extend imitating ballistic jets. The fitted physical parameters of
the jet model turned out to be physically reliable and characteristic for
SS\,433 jets that unlikely to be occasional. This model explains naturally, and
meets approval by a) the observed shock-pressed morphology of the radio jets
and their brightness, b) the observed $\sim 10%$ deflections from the standard
kinematic model --- just a magnitude of the jet speed decrement in the model,
c) regularly observed for the radio jets the precession phase deviation from
the standard kinematic model prediction, d) dichotomy of distance to the
object, 4.8\,kpc vs. 5.5\,kpc, determined on the basis of the radio jets
kinematics on scales of a sub-arcsecond and several arcseconds.
