| Country: | HRV |
| Type: | D |
| Route: | 3 |
| Length Km: | 218.4 |
| Length Round: | 1 |
| Map Custom: | yes |
| Terminus A: | Goričan border crossing to Hungary |
| Junction: | A4 in Goričan, Breznički Hum, Komin and Popovec interchanges D20 in Čakovec D209 in Čakovec D208 in Nedelišće D2 near Varaždin D528 near Varaždin D22 in Novi Marof D24 in Novi Marof D29 in Soblinec A3 in Ivanja Reka and Lučko interchanges A1 in Lučko and Karlovac interchanges D1 in Karlovac D310 in Jastrebarsko D228 in Karlovac D6 in Karlovac D36 in Karlovac D23 in Duga Resa D204 in Bosanci D42 near Vrbovsko D32 in Delnice D203 in Delnice A6 in Delnice interchange D501 in Gornje Jelenje |
| Terminus B: | D8 in Rijeka |
| Counties: | Međimurje, Varaždin, Zagreb County, City of Zagreb, Karlovac, Primorje-Gorski Kotar |
| Cities: | Čakovec, Varaždin, Zagreb, Karlovac, Duga Resa, Delnice, Rijeka |
D3 is a state road in western parts of Croatia connecting Rijeka on the Adriatic coast to Zagreb, Karlovac and Varaždin, as well as to the Goričan border crossing to Hungary.[1] Furthermore, the D3 is used as a parallel road to a number of motorways in Croatia – namely the A4 motorway north of Zagreb, the A1 motorway between Zagreb and Bosiljevo 2 interchange south of Karlovac and finally the A6 motorway between Bosiljevo 2 interchange and Rijeka – and it connects to nearly all motorway interchanges on that route either directly or via connecting roads.[2] The road is 218.4km (135.7miles) long.[3]
The D3 state road is concurrent along parts of its route with other state roads, most notably the D1 between Zagreb and Karlovac, as well as some sections of the A4 (south of Popovec interchange) and the A3 (between Ivanja Reka and Lučko interchanges) motorways.[2] [3] The A3 and A4 motorway sections that are concurrent with the D3 state road are also a part of Zagreb bypass and are not tolled.
The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste, a state-owned company.[4]
Traffic is regularly counted and reported by Hrvatske ceste, operator of the road.[5]
| D3 traffic volume | |||||||||
| align=center bgcolor=00c0f0 | Road | align=center bgcolor=00c0f0 | Counting site | align=center bgcolor=00c0f0 | AADT | align=center bgcolor=00c0f0 | ASDT | align=center bgcolor=00c0f0 | Notes |
| D3 | 1302 Goričan | align=center | 1,012 | align=center | 1,694 | Between the border crossing and Ž2032 junction. | |||
| D3 | 1315 Štefanec | align=center | 3,681 | align=center | 3,928 | Adjacent to the Ž2022 and junction. | |||
| D3 | 1234 Čakovec | align=center | 7,931 | align=center | 8,176 | Between the D20 and Ž2031 junctions. | |||
| D3 | 1205 Pušćine | align=center | 10,783 | align=center | 11,130 | Adjacent to the D208 junction. | |||
| D3 | 1221 Novi Marof | align=center | 6,821 | align=center | 7,107 | Adjacent to the Ž2136 junction. | |||
| D3 | 2003 Blažev Dol | align=center | 7,354 | align=center | 7,215 | Adjacent to the Ž3016 junction. | |||
| D3 | 2032 Belovar | align=center | 11,169 | align=center | 10,576 | Adjacent the Ž1006 junction. | |||
| D3 | 3003 Duga Resa | align=center | 9,949 | align=center | 11,039 | Between the Ž3181 and D23 junctions. | |||
| D3 | 3005 Vrbovsko | align=center | 1,168 | align=center | 1,845 | Adjacent to the L58032 junction. | |||
| D3 | 2937 Skrad | align=center | 1,229 | align=center | 1,788 | Adjacent to the L58032 junction. | |||
| D3 | 2905 Delnice | align=center | 5695 | align=center | 7560 | Between the D203 and D32 junctions. The AADT figure estimated by Hrvatske ceste. | |||
| D3 | 2935 Gornje Jelenje | align=center | 2,662 | align=center | 3,903 | Between the Ž5032 and D501 junctions. |