Editing Roundabout (section)

=== Trams ===
[[Tram]] roundabouts, which are found in many countries, combine roundabouts for individual vehicles with tram lines. Large areas are needed for tram roundabouts that include a junction between tram lines. Tramways usually cross the centre of the roundabout. At busy junctions, this requires traffic lights or special signalling granting the trams priority. However, there are also roundabouts where trams and vehicles share the carriageway. Some roundabouts have a tram stop on the island.

*In France, tram roundabouts commonly have radii between 14 and 22 metres, although some have radii outside this range.<ref name="utp.fr">{{Cite web |url=https://www.utp.fr/sites/default/files/Dpt_AET/201706_Cerema-STRMTG_Giratoires_et_tramways.pdf |title=Archived copy |access-date=19 October 2019 |archive-url=https://web.archive.org/web/20191019114458/https://www.utp.fr/sites/default/files/Dpt_AET/201706_Cerema-STRMTG_Giratoires_et_tramways.pdf |archive-date=19 October 2019 |url-status=dead }}</ref>
*In some cities, the tramway bisects the roundabout. The French {{ill|Cerema|fr}} considers that the mix of priorities makes these confusing and difficult to understand: a traditional modern roundabout gives the priority to the central ring, while tram roundabouts give priority to the central ring but higher priority still to the tramway. This generates many collisions of cars and trams, between 7 and 10 for each tram roundabout in France between 2006 and 2015 (between 0.37 and 1.01 per year).<ref name="utp.fr" />{{contradictory-inline|reason=the per-year figures don't multiply up to the figures over 11 years|date=September 2020}}
*In inner [[Melbourne]], particularly in the inner suburban area of [[South Melbourne]], where the [[Trams in Melbourne|tram network]] is extensive, tram tracks always pass through the central island, with drivers required to give way to vehicles approaching from their right and to trams approaching from right angles. The [[Haymarket roundabout]] between [[Royal Parade, Melbourne|Royal Parade]] and [[Elizabeth Street, Melbourne|Elizabeth Street]] contains a tram-stop, pedestrian crossings, three entering tram lines, traffic signals to stop vehicular traffic at each crossing point when a tram is due, service roads and a pedestrian crossing.
*[[Brussels]] tram roundabouts employ multiple configurations. At the Barrière de [[Saint-Gilles, Belgium|St-Gilles]] (Dutch: {{lang|nl|Bareel St-Gillis}}), tram tracks form a circle in the carriageway, while Churchill, Verboekhoven and Altitude Cent (''Hoogte Honderd'') have reserved tram tracks inside the roundabout. At Vanderkindere and Place Stéphanie (''Stefaniaplein''), they go straight through the centre, in the latter case with a slip track up the Chaussée de Charleroi (''Charleroisesteenweg''), while at Montgomery they tunnel underneath.
*In Dublin, Ireland, the [[Red Cow interchange]] at the [[N7 road (Ireland)|N7]]/M50 junction is grade-separated and is signal-controlled with secondary lanes (separate from the main roundabout) for those making left turns. The junction, the busiest in Ireland, had tram lines added to it with the opening of the [[Luas]] system in 2004. The tracks pass across one carriageway of the N7, and across the southern M50 sliproads. Trams pass every five minutes at rush hour. The roundabout was replaced with a grade-separated free flowing junction.
*[[Gothenburg, Sweden]] has a tram roundabout at Mariaplan in the inner suburb of Majorna. The trams make a right turn, giving the roundabout an odd design.
*In [[Warsaw]], trams typically cross straight through roundabouts and have junctions in the centre of them. In [[Wrocław]], Poland, trams pass through the Powstańców Śląskich Roundabout, stopping in the roundabout (north-headed track).
*The [[Silesian Interurbans|Silesian tram network]] in Poland has two tram roundabouts. In the city centre of [[Katowice]], the tram line passes through the centre of the Ziętka Roundabout in a north–south alignment, with a tram stop in the centre of the circle.{{efn|There is also a branch line immediately north of the roundabout going west, and an additional tram stop on that branch.}} In [[Będzin]], unusually, the tram junction itself forms a circular roundabout, with trams going around the circle; there are tram stops immediately outside the roundabout on each branch.
*In Vítězné náměstí (Victory Square) in [[Prague]], Czech Republic, a tramway crosses the carriage way of the roundabout at three places. Entering as well as leaving trams give way to vehicles. In the years 1932–42 trams circulated much like vehicles.<ref>[http://www.prazsketramvaje.cz/view.php?cisloclanku=2006041435 Vítězné náměstí], Prague trams fun web</ref>
*In [[Kyiv]], Ukraine an interchange of two "[[Trams in Kyiv|fast tram]]" lines is below a roundabout.
*[[Oslo]], Norway also has many roundabouts with [[Oslo Tramway|tram]] tracks passing through; for example at Bislett, Frogner plass, [[Sinsen]], Solli plass, Carl Berners plass and Storo.
*In [[Wolverhampton, England]], the [[West Midlands Metro]] tram passes through the centre of a roundabout on the approach to its terminus at [[Wolverhampton St George's tram stop|St Georges]]. This also happens in [[New Addington]] in [[Croydon]] on the [[Tramlink]] north of [[King Henry's Drive tram stop]] on Old Lodge Lane at the junction to King Henry's Drive.
*In [[Sheffield, England]] the [[Sheffield Supertram]] systems crosses two major roundabouts. At the Brook Hill roundabout near [[University of Sheffield|Sheffield University]], the tramway passes underneath the roundabout in a subway, while at Park Square in the city centre it travels above the roundabout on bridges and viaducts with a junction in the central island.
*A roundabout in southern [[Zagreb]], Croatia features tram tracks passing through, curving at a 90° angle, as well as a full tram mini-roundabout inside the middle road island. In Croatia, where tram tracks enter the road without traffic lights, trams have the highest priority and other non-emergency vehicles are required to yield.
*In [[Salt Lake City, Utah]] a [[light rail]] line on the south side of the [[University of Utah]] crosses a roundabout where Guardsman Way meets South Campus Drive. Like virtually all rail crossings in the United States, both crossings in the circle are equipped with [[boom barrier]]s.
*In [[Kassel]], Germany, Lines 4 and 8 pass through the centre of the roundabout at Platz der Deutschen Einheit. The tram stops are in the centre of the roundabout. Roundabout traffic is controlled by traffic lights. Pedestrian access is via subway and street-level crossings at the lights.
*In [[Bremen]], Germany, tram lines 8 and 6 pass through the centre of the roundabout "Am Stern" east of the main railway station. They enter from the west and exit in a northeastern direction, thus making a slight bend within the roundabout. Both stations are situated on the north-eastern edge of the roundabout. Traffic is controlled by two-colour traffic lights inside the roundabout.