D400 is a state road connecting D66 and D21 state roads to Pula city centre and Pula ferry port. The road is only long. Urban planning documents of the city of Pula indicate that the two-lane road may be expanded to four traffic lanes.
Like all other state roads in Croatia, the D400 is managed and maintained by Hrvatske ceste, a state-owned company.
Traffic volume
There are no official published data on volume of traffic carried by the D400 road, however, the volume may be inferred from traffic volumes on the southernmost traffic counting sites of the state roads terminating at the D400 route, namely D21 and D66. Additionally the road carries an unspecified volume of urban traffic of the city of Pula, therefore it may be safely concluded that average annual daily traffic (AADT) and average summer daily traffic (ASDT) of the D400 road exceed 15,000 and 20,000 vehicles per day respectively.
NOTE: Junctions, populated areas and toll plazas are listed here.--> D400 volume of traffic Road Counting site AADT ASDT Notes D21 3905 Pula north 7,136 9,464 The southernmost traffic counting site on D21, effectively counting traffic between D21 and D400. D66 3904 Loborika 6,229 8,345 The southernmost traffic counting site on D66, effectively counting traffic between D66 and D400.
Road junctions and populated areas
NOTE: Junctions, populated areas and toll plazas are listed here.--> D400 junctions/populated areas Type Slip roads/Notes D66 to Pula Airport, A9/B9 expressway Pula interchange and Labin.The eastern terminus of the road. Pula D21 to Bale. Pula ferry port. The western terminus of the road.
Sources