D424 is a state road in Croatia that connects the city of Zadar with the A1 motorway.

[1] It links Gaženica port in southern Zadar and Zadar 2 interchange on A1 motorway, executed as a dual carriage expressway (Croatian: brza cesta) connector, with an 80 km/h (50 mph) speed limit.

[3] Together with the new Gaženica port and the Crno commercial zone, the expressway is expected to bring prosperity to Zadar.

[5] Traffic is regularly counted and reported by Hrvatske ceste, operator of the road.

[6] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the road connects a number of summer resorts to the Croatian motorway network.