U4 (Vienna U-Bahn)

{{Short description|Metro line in Vienna}}

{{Expand German|topic=transp|U-Bahn-Linie 4 (Wien)|date=March 2018}}

{{Infobox rail line

| name = Line U4
U-Bahn-Linie U4

| color = 00963F

| logo = Wien U4.svg

| logo_width = 30px

| logo_alt =

| image = Vídeň, U4.jpg

| image_width = 265px

| image_alt =

| caption = Line U4 train at {{stl|Wiener Linien|Kettenbrückengasse}}

| type = Rapid transit

| system = Vienna U-Bahn

| status = Operational

| locale =

| start = {{stl|Wiener Linien|Hütteldorf}}

| end = {{stl|Wiener Linien|Heiligenstadt}}

| connectinglines = {{ric|Wiener Linien|U1}} {{ric|Wiener Linien|U2}} {{ric|Wiener Linien|U3}} {{ric|Wiener Linien|U6}} {{rint|vienna|WLB}} {{rint|vienna|s}}

| stations = 20

| routes =

| open = {{Start date|1976|05|08|df=y}}

| close =

| owner =

| operator = Wiener Linien

| character =

| depot = Wasserleitungswiese, Hütteldorf

| stock =

| linelength = {{convert|16.5|km|mi|abbr=on}}

| tracklength =

| gauge = {{Track gauge|sg|allk=on}}

| electrification = 750 V DC third rail

| speed =

| elevation =

| website =

| map =

| map_state =

}}

Line U4 is a line on the Vienna U-Bahn metro system.

Opened in 1976, it currently has 20 stations and a total length of {{convert|16.5|km|mi|abbr=on}}, from {{stl|Wiener Linien|Hütteldorf}} to {{stl|Wiener Linien|Heiligenstadt}}.{{cite web |url=http://homepage.univie.ac.at/horst.prillinger/metro/english/u4.html |title=Line Line U4 Heiligenstadt - Hütteldorf |last=Prillinger |first=Horst |website=The Vienna Metro |access-date=2020-12-15}}

It is connected to {{lnl|Wiener Linien|U1}} at {{stl|Wiener Linien|Karlsplatz}} and {{stl|Wiener Linien|Schwedenplatz}}, {{lnl|Wiener Linien|U2}} at {{stl|Wiener Linien|Schottenring}}, {{lnl|Wiener Linien|U3}} at {{stl|Wiener Linien|Landstraße}}, {{lnl|Wiener Linien|U6}} at {{stl|Wiener Linien|Längenfeldgasse}} and {{stl|Wiener Linien|Spittelau}}.