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We used 15 GHz multi-epoch Very Long Baseline Array (VLBA) polarizationsensitive observations of 484 sources within a time interval 1996--2016 fromthe MOJAVE program, and also from the NRAO data archive. We have analyzed thelinear polarization characteristics of the compact core features and regionsdownstream, and their changes along and across the parsec-scale active galacticnuclei (AGN) jets. We detected a significant increase of fractionalpolarization with distance from the radio core along the jet as well as towardsthe jet edges. Compared to quasars, BL Lacs have a higher degree ofpolarization and exhibit more stable electric vector position angles (EVPAs) intheir core features and a better alignment of the EVPAs with the local jetdirection. The latter is accompanied by a higher degree of linear polarization,suggesting that compact bright jet features might be strong transverse shocks,which enhance magnetic field regularity by compression.

Linear Polarization Properties of Parsec-Scale AGN~Jets