M2:i/c @
http://www.openstreetmap.org/?lat=42.461935&lon=18.511984 (concurrent E65/E80 too)
Podi wp should be moved to the roundabout center (concurrent E65/E80 too)
M4 wp should be moved to the roundabout (concurrent E65/E80 too)
R1 should be renamed to R22_xx (concurrent E65/E80 too)
R22 should be renamed to R22_xx (concurrent E65/E80 too)
E65/E80_S should be renamed to M2.4, concurrent E65/E80 wp should be renamed to M2 (instead of M2.1)
M4:wp 3+4: 2 shaping points per curve
M9:Many shaping points b/n Lju and Kra
Many shaping points b/n Vel and RKS/MNE
RKS/MNE should be renamed to MNE/RKS
M18:Exceeds limits b/n BIH/MNE and R14 (concurrent E768 too)
M21:Are you sure that M21 and E763 are not concurrent near Biljelo Polje (E763 not via bypass)? I couldn't see any E signs there and GM indicates that both routes are E763
M2.3:Shaping point next to Sta is not required