A catalyst article comprising a substrate comprising an inlet end and an outlet end, a first zone, a second zone, and a third zone, where the first zone comprises a second SCR catalyst; where the second zone comprises an ammonia slip catalyst comprising a blend of: a platinum group metal on a support and a first SCR catalyst; where the third zone comprises a catalyst ("third zone catalyst") selected from the group consisting of a diesel oxidation catalyst and a diesel exotherm catalyst; where the first zone is located upstream of the second zone, and the second zone is located upstream of the third zone; where the catalyst article comprises a passive NOx adsorber ("PNA"); where the ASC is included in a first layer; where the third zone catalyst is included in a second layer which extends from the outlet end to less than a total length of the substrate, where the second layer is located on top of the first layer and is shorter in length than the first layer; and where the second SCR catalyst is included in a layer which extends from the inlet end to less than a total length of the substrate, and which at least partially overlaps the first layer. where the first zone comprises a second SCR catalyst; where the second zone comprises an ammonia slip catalyst comprising a blend of: a platinum group metal on a support and a first SCR catalyst; where the third zone comprises a catalyst ("third zone catalyst") selected from the group consisting of a diesel oxidation catalyst and a diesel exotherm catalyst; where the first zone is located upstream of the second zone, and the second zone is located upstream of the third zone; where the catalyst article comprises a passive NOx adsorber ("PNA"); where the ASC is included in a first layer; where the third zone catalyst is included in a second layer which extends from the outlet end to less than a total length of the substrate, where the second layer is located on top of the first layer and is shorter in length than the first layer; and where the second SCR catalyst is included in a layer which extends from the inlet end to less than a total length of the substrate, and which at least partially overlaps the first layer. a platinum group metal on a support and a first SCR catalyst; where the third zone comprises a catalyst ("third zone catalyst") selected from the group consisting of a diesel oxidation catalyst and a diesel exotherm catalyst; where the first zone is located upstream of the second zone, and the second zone is located upstream of the third zone; where the catalyst article comprises a passive NOx adsorber ("PNA"); where the ASC is included in a first layer; where the third zone catalyst is included in a second layer which extends from the outlet end to less than a total length of the substrate, where the second layer is located on top of the first layer and is shorter in length than the first layer; and where the second SCR catalyst is included in a layer which extends from the inlet end to less than a total length of the substrate, and which at least partially overlaps the first layer. where the third zone comprises a catalyst ("third zone catalyst") selected from the group consisting of a diesel oxidation catalyst and a diesel exotherm catalyst; where the first zone is located upstream of the second zone, and the second zone is located upstream of the third zone; where the catalyst article comprises a passive NOx adsorber ("PNA"); where the ASC is included in a first layer; where the third zone catalyst is included in a second layer which extends from the outlet end to less than a total length of the substrate, where the second layer is located on top of the first layer and is shorter in length than the first layer; and where the second SCR catalyst is included in a layer which extends from the inlet end to less than a total length of the substrate, and which at least partially overlaps the first layer.