Measurements of a complete set of deuteron analyzing powers (iT(11), T-20, T-21, T-22) for elastic deuteron-proton scattering at 250 MeV/nucleon have been performed with polarized deuteron beams at RIKEN RI Beam Factory. The obtained data are compared with the Faddeev calculations based on the modern nucleon-nucleon forces together with the Tucson-Melbourne' 99, and UrbanaIX three nucleon forces.