D503 is a state road in the northern Dalmatia

Dalmatia

Dalmatia is a historical region on the eastern coast of the Adriatic Sea. It stretches from the island of Rab in the northwest to the Bay of Kotor in the southeast. The hinterland, the Dalmatian Zagora, ranges from fifty kilometers in width in the north to just a few kilometers in the south....

 region of Croatia

Croatia

Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...

 that provides access from the A1 motorway

A1 (Croatia)

The A1 motorway is the longest motorway in Croatia spanning . As it connects Zagreb, the nation's capital, to Split, the second largest city in the country and the largest city in Dalmatia, the motorway represents a major north–south transportation corridor in Croatia and a significant part of the...

's Benkovac interchange to the D8 state road

D8 (Croatia)

D8 state road comprises Croatian section of Adriatic Highway, and it runs from Pasjak border crossing to Slovenia via Rijeka, Senj, Zadar, Šibenik, Split, Opuzen and Dubrovnik to the border with Montenegro at Karasovići. Most of the D8 state road is still a two-lane road, excepting rare four-lane...

, facilitating access from A1 motorway to Biograd na Moru

Biograd na Moru

Biograd na Moru is a city and municipality in northern Dalmatia, Croatia and is significant for being the former capital of the medieval Croatian Kingdom. Its population is 6,059 . Biograd is administratively part of the Zadar County...

 and surrounding seaside resorts. The road is 16.2 km (10.1 mi) long.

The southern terminus of the road is located in Biograd na Moru

Biograd na Moru

Biograd na Moru is a city and municipality in northern Dalmatia, Croatia and is significant for being the former capital of the medieval Croatian Kingdom. Its population is 6,059 . Biograd is administratively part of the Zadar County...

 ferry port, from where Jadrolinija

Jadrolinija

Jadrolinija is a Croatian sea shipping company. It is a state-owned company and its main mission is connecting Croatian islands to the mainland by operating regular passenger and cargo transport services...

 ferries fly to Tkon

Tkon

Tkon is a municipality in Croatia in the Zadar county. According to the 2001 census, there are 707 inhabitants, 98% which are Croats.It is located on the island of Pašman and is connected by ferry to the mainland town of Biograd na Moru....

 island.

At its northern terminus, the road connects to D27 state road

D27 (Croatia)

D27 is a state road connecting Gračac in the southern part of Lika, Croatia to D8 state road via Benkovac. The road is 96.9 km long.The road also provides an alternate route to the sections of A1 motorway and the D8 state road...

 which serves as a parallel road to the A1 motorway, connecting to Gračac

Gracac

Gračac is a village and a municipality in the southern part of Lika, Croatia. It is located south of Udbina, northeast of Obrovac, northwest of Knin and southeast of Gospić...

 (to the north) facilitating a bypass of Maslenica bridges in case of strong winds preventing use of both of the bridges.

The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste

Hrvatske ceste

Hrvatske ceste is a Croatian state-owned company pursuant to provisions of the Croatian Public Roads Act , the county and local roads are managed by county authorities, while the motorways are managed by Croatian Motorways Ltd and other concessionaires.The company is currently administered by a...

, a state-owned company.

Traffic volume

Traffic is regularly counted and reported by Hrvatske ceste

Hrvatske ceste

Hrvatske ceste is a Croatian state-owned company pursuant to provisions of the Croatian Public Roads Act , the county and local roads are managed by county authorities, while the motorways are managed by Croatian Motorways Ltd and other concessionaires.The company is currently administered by a...

, operator of the road. 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 Croatian motorway network.

D503 traffic volume
Road	Counting site	AADT	ASDT	Notes
D503	4917 Kakma	3,299	5,807	Adjacent to Kakma.

Road junctions

D503 major junctions/populated areas
Type	Slip roads/Notes
	Zapužane D27 D27 (Croatia) D27 is a state road connecting Gračac in the southern part of Lika, Croatia to D8 state road via Benkovac. The road is 96.9 km long.The road also provides an alternate route to the sections of A1 motorway and the D8 state road...  to Gračac Gracac Gračac is a village and a municipality in the southern part of Lika, Croatia. It is located south of Udbina, northeast of Obrovac, northwest of Knin and southeast of Gospić...  (to the north) and to A1 motorway A1 (Croatia) The A1 motorway is the longest motorway in Croatia spanning . As it connects Zagreb, the nation's capital, to Split, the second largest city in the country and the largest city in Dalmatia, the motorway represents a major north–south transportation corridor in Croatia and a significant part of the...  Benkovac interchange (to the south). The northern terminus of the road. Northbound D503 traffic defaults to northbound D27.
	Polača Polaca Polača is a municipality in Croatia in the Zadar County. According to the 2001 census, there are 1,434 inhabitants, 94% of which are Croats.... Ž6047 to Tinj.
	Kakma Kakma Kakma is a village in Croatia. It is connected by the D503 highway.... Ž6042 to Galovac and Vrana.
	Biograd na Moru Biograd na Moru Biograd na Moru is a city and municipality in northern Dalmatia, Croatia and is significant for being the former capital of the medieval Croatian Kingdom. Its population is 6,059 . Biograd is administratively part of the Zadar County... D8 D8 (Croatia) D8 state road comprises Croatian section of Adriatic Highway, and it runs from Pasjak border crossing to Slovenia via Rijeka, Senj, Zadar, Šibenik, Split, Opuzen and Dubrovnik to the border with Montenegro at Karasovići. Most of the D8 state road is still a two-lane road, excepting rare four-lane...  to Sveti Filip i Jakov Sveti Filip i Jakov Sv. Filip i Jakov is a municipality in Croatia in Zadar County. It has a total population of 4,426, in the following settlements:* Donje Raštane, population 480* Gornje Raštane, population 440* Sikovo, population 370...  to the north, and Pakoštane Pakoštane Pakoštane is a municipality in Croatia in the Zadar county. According to the 2001 census, there are 3,884 inhabitants, 98% which are Croats.North of the Vrana Lake, 6 km from Pakoštane, there is historic settlement of Vrana.-Attractions:...  to the south.
	Biograd na Moru Biograd na Moru Biograd na Moru is a city and municipality in northern Dalmatia, Croatia and is significant for being the former capital of the medieval Croatian Kingdom. Its population is 6,059 . Biograd is administratively part of the Zadar County...  ferry port Ferry access to Tkon Tkon Tkon is a municipality in Croatia in the Zadar county. According to the 2001 census, there are 707 inhabitants, 98% which are Croats.It is located on the island of Pašman and is connected by ferry to the mainland town of Biograd na Moru.... , Pašman Pašman Pašman is an island off the coast of the Adriatic Sea in Croatia, located to the south of Zadar, surrounded by the islands Ugljan, Iž, Dugi otok and Kornati...  island (D110 D110 (Croatia) D110 is the main state road on the islands of Pašman and Ugljan in Croatia, connecting the towns of Preko and Tkon. From these two towns Jadrolinija ferries cross to the mainland, docking in Zadar and joining the D407 state road and Biograd na Moru and the D503 state road . The road is long... ). The southern terminus of the road.