diff --git a/source/Lib/CommonLib/Slice.cpp b/source/Lib/CommonLib/Slice.cpp
index a0dd315dfb7c9b01da9f969f0bbc6b96938e026e..f4fef427fac885a26ac36587456e4218842b7358 100644
--- a/source/Lib/CommonLib/Slice.cpp
+++ b/source/Lib/CommonLib/Slice.cpp
@@ -685,6 +685,18 @@ void Slice::checkRPL(const ReferencePictureList* pRPL0, const ReferencePictureLi
           if( m_eNalUnitType == NAL_UNIT_CODED_SLICE_RADL )
           {
             CHECK( refPicDecodingOrderNumber < associatedIRAPDecodingOrderNumber, "RADL picture detected that violate the rule that no active entry in RefPicList[] shall precede the associated IRAP picture in decoding order" );
+#if JVET_S0084_S0110_RADL
+            // Checking this: "When the current picture is a RADL picture, there shall be no active entry in RefPicList[ 0 ] or 
+            // RefPicList[ 1 ] that is any of the following: A RASL picture with pps_mixed_nalu_types_in_pic_flag is equal to 0
+            for (int i = 0; i < pcRefPic->numSlices; i++)
+            {
+              if (pcRefPic->slices[i]->getPPS()->getMixedNaluTypesInPicFlag() == 0)
+              {
+                CHECK(pcRefPic->slices[i]->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL, "When the current picture is a RADL picture, there shall be no active entry in RefPicList[ 0 ] or RefPicList[ 1 ] that is a RASL picture with pps_mixed_nalu_types_in_pic_flag is equal to 0");
+              }
+            }
+#endif
+
           }
 
           CHECK( pcRefPic->temporalId > m_pcPic->temporalId, "The picture referred to by each active entry in RefPicList[ 0 ] or RefPicList[ 1 ] shall be present in the DPB and shall have TemporalId less than or equal to that of the current picture." );
diff --git a/source/Lib/CommonLib/TypeDef.h b/source/Lib/CommonLib/TypeDef.h
index cc2dfbb46bbb7a48497909cfff66ceb0c7f6c7c8..85f8aff7c1c3a0dac397c342a0b62b9fa9bdf843 100644
--- a/source/Lib/CommonLib/TypeDef.h
+++ b/source/Lib/CommonLib/TypeDef.h
@@ -56,6 +56,7 @@
 #define JVET_R0193                                        1 // JVET-R0193: signalling of the number of maximum sublayers used for inter-layer prediction for each layer
 #define JVET_R0193_S0141                                  1 // JVET-S0141 item 47 : item 47: In the general sub-bitstream extraction process, specify the conditions under which an output sub-bitstream is required to be a conforming bitstream such that the value of tIdTarget is specified to be in the range of 0 to vps_ptl_max_tid[ vps_ols_ptl_idx[ targetOlsIdx ] ], inclusive (instead of 0 to 6 inclusive). (JVET-S0158 aspect 1)
 #define JVET_T0091_LMCS_ENC_OVERFLOW_FIX                  1 // JVET-T0091: LMCS encoder overflow fix at high bit-depth for SDR
+#define JVET_S0084_S0110_RADL                             1 // When the current picture is a RADL picture, allow RASL pictures with pps_mixed_nalu_types_in_pic_flag is equal to 1 in active entries in RefPicList[ 0 ] or RefPicList[ 1 ]
 
 //########### place macros to be be kept below this line ###############
 #define JVET_S0257_DUMP_360SEI_MESSAGE                    1 // Software support of 360 SEI messages