# Zürich Hauptbahnhof

Zürich Hauptbahnhof (Zürich Main Station or Zürich Central Station), often shortened to Zürich HB or just HB, is the largest railway station in Switzerland and one of the busiest in Europe. Zürich is a major railway hub, with services to and from across Switzerland and neighbouring countries such as Germany, Italy, Austria and France. The station was originally constructed as the terminus of the Spanisch Brötli Bahn, the first railway built completely within Switzerland. Serving up to 2,915 trains per day, Zürich HB is one of the busiest railway stations in the world. It was ranked as the best European railway station in 2023 and 2024.
The station can be found at the northern end of the Altstadt, or old town, and east of the Europaallee in central Zürich, near the confluence of the rivers Limmat and Sihl. (The Sihl passes through the station in a tunnel with railway tracks both above and below.) The station is on several levels, with platforms both at ground and below-ground level, and tied together by underground passages and the ShopVille shopping mall. The station's railway yards extend about 4 km (2.5 mi) to the west.
The station is included in the Swiss Inventory of Cultural Property of National Significance.
Besides Zürich HB, there are 22 railway stations in the municipality of Zürich: Affoltern, Altstetten, Binz, Brunau, Enge, Friesenberg, Giesshübel, Hardbrücke, Leimbach, Manegg, Oerlikon, Saalsporthalle, Schweighof, Seebach, Selnau, Stadelhofen, Stettbach, Tiefenbrunnen, Triemli, Wiedikon, Wipkingen and Wollishofen (excluding the five stations of the Forch railway, which uses the tracks of the tram system in Zürich). Another railway station, Letten, has been disused since 1989.

## History
### The first station

The first Zürich railway station was built by Gustav Albert Wegmann [de], on what were then the north-western outskirts of the city. It occupied a piece of land between the rivers Limmat and Sihl, and trains accessed it from the west via a bridge over the Sihl. At the eastern end of the station was a turntable, used for turning locomotives. This basic terminal station layout, with all trains arriving from the west, was to set the basic design of the station for the next 143 years.
The new station was the initially the terminus of the Swiss Northern Railway, more often called the Spanisch-Brötli-Bahn, which opened on 9 August 1847 and linked Zürich with Baden. Initially the railway lines in the station were laid to a gauge of 1,600 mm (5 ft 3 in), perhaps because the same gauge was used at the contemporaneous and nearby Grand Duchy of Baden State Railway.
From the opening of the station, the railways of northern Switzerland developed rapidly, and by 1853 the Swiss Northern Railway had been merged into the Swiss Northeastern Railway (Schweizerische Nordostbahn; NOB). Also in 1853, the tracks in the station were regauged to the standard gauge (1,435 mm or 4 ft 8+1⁄2 in) that is still used by all lines in the station. In 1856, the NOB completed its line from the station to Winterthur via the Wipkingen Tunnel and Oerlikon. In 1858, the NOB completed its line from Baden via Brugg to Aarau, where it connected with the Swiss Central Railway (Schweizerische Centralbahn; SCB), thus providing connections to Basel, Solothurn and Lausanne.
With further railways planned, it became clear that the 1847 station was not large enough. A rebuild was started to meet Zürich's increased transport needs, albeit on the same site and using the same basic layout.

### The 1871 station

In 1871, the replacement station building opened, to a design by architect Jakob Friedrich Wanner. Its main entrance is a triumphal arch facing the end of the then newly built Bahnhofstrasse. In front of the arch stands a monument to the railway pioneer Alfred Escher. The magnificent sandstone neo-Renaissance building features richly decorated lobbies and atriums, restaurants and halls. Originally housed inside it was the headquarters of the Schweizerische Nordostbahn (NOB). The train shed, spanned by iron trusses, initially covered six tracks.
The station was named Zürich Hauptbahnhof in 1893, to reflect that year's incorporation of many of Zürich's suburbs into an enlarged municipality. In 1902, the year in which the Swiss Federal Railways (SBB) took over the Schweizerische Centralbahn and the NOB, the tracks inside the eastern end of the train shed were lifted, due to a lack of space. Since then, these tracks have terminated at a more central location, immediately to the north of the Bahnhofstrasse. Also in 1902, four more tracks and a north wing with a restaurant and railway mail service were added to the north of the train shed. In the vacant space left inside the train shed, new rooms were built for baggage handling.
On 18 February 1916, the SBB decided that electrification of its network would be by the high-tension single-phase alternating current system that is still used on all routes. On 5 February 1923, the electrified Zug–Zürich railway was put into operation, the first electrified line to Zurich. By 1927 all routes from Zürich Hauptbahnhof had been electrified.
In 1933, the station's simple concourse and the iron and glass train shed were created with seven and a half arches to cover 16 tracks. As part of that work, the main shed was shortened by two segments.
In the 1940s, the line between Zürich and Geneva served as a "parade route". The first lightweight steel express train had entered service on this route in 1937. By 11 June 1960, the SBB network was largely electrified. In the following year, the SBB introduced its first four-system electric trains under the Trans Europ Express banner, and thereby increased the Zürich Hauptbahnhof's international importance.
In 1963, about 500 metres before the concourse, an imposing six-storey concrete cube arose in the station yard. It was designed by SBB architect Max Vogt [de], and it has been the home of the Zentralstellwerk Zürich (central signalling control) since 1966. The then state-of-the-art relay-controlled interlocking system replaced the decentralised mechanical and electro-mechanical signal boxes in the station throat, including the Stellwerk «Seufzerbrücke» ("Bridge of Sighs" signal box), which had spanned the entire station throat just east of the Langstrasse.
The signalling control system was modernised to coincide with the commissioning of the Zürich S-Bahn. It is equipped with a computerised controller that performs the standard operations. Apart from the tracks and points (switches) of the "Sihlpost station" (which are controlled by an electronic control system), the entire control of the points and signals in the Langstrasse–Concourse section is still largely under relay control, in some cases with the original relay sets installed in 1966.
The immense station yard, with its platform tracks and station building, is a bottleneck for the city of Zürich. The Limmat and the Sihl were further bottlenecks, and the combination of the three led to gridlock in the 1950s and 1960s. In parallel, there were plans for a subway system. Although the people voted against it in 1962, the city's Civil Engineering Department had already started to convert the Bahnhofplatz for the purpose of a possible underground line.

### ShopVille and S-Bahn

On 1 October 1970, construction of the Bahnhofplatz, as well as the pedestrian and shopping arcade ShopVille was completed. Upon its opening, the Bahnhofplatz became a pedestrian-free zone, and the underground ShopVille the only access to the station. Contrary to expectations, ShopVille did not capture the support of the people, who, in 1973, voted even more emphatically to reject a subway system.
In the 1980s, ShopVille became a drug-dealing hub, due to its proximity to the Autonomes Jugendzentrum Zürich ("Autonomous Youth Center Zürich"). Its low point was reached at the end of the decade, when travellers avoided all parts of it other than the concourse and the tram stop. Consequently, there were several night-time closures by mesh fences. However, the solution to this problem was foreseeable, as the people had agreed on 29 November 1981 to the construction of the Zürich S-Bahn and the extension of the Sihltal Zürich Uetliberg Bahn to the Hauptbahnhof.
The 2.1 km (1.3 mi) long Hirschengraben Tunnel was built for the S-Bahn from the Hauptbahnhof to Zürich Stadelhofen. This new line continued through the Zürichberg Tunnel to Stettbach, with connections to the existing lines to Dietlikon and Dübendorf. In the Hauptbahnhof, two underground stations were constructed. For the S-Bahn, a four-track station with the working title Museumstrasse was built, and the Sihltal Zürich Uetliberg Bahn was extended to the Zürich HB SZU station, which had once been intended for the never-realized U-Bahn.
The opening of the S-Bahn was on 27 May 1990, and since then, the ShopVille arcades have connected the two underground stations with the main hall. Black and white striped marble walls and granite floors are the main design features of what is one of the largest shopping centres in Switzerland. In 1996, the main hall was cleared of its temporary installations. In 1997, the train shed was fitted on both sides with pitched roofs on sloping concrete supports, designed by local architects Marcel Meili and Markus Peter.

### Löwenstrasse station

The planning of the S-Bahn and the Rail 2000 long-haul project raised the idea of building the Weinberg Tunnel, a through route from Zürich Hauptbahnhof to Oerlikon. That proposal was initially postponed, but the great success of the S-Bahn led to an expansion of services and, consequently, to capacity constraints. Plans were made to expand existing rail lines within Zürich leading to the north, but this encountered resistance from the population living near those rail lines. As an alternative the construction of the Weinberg tunnel and four additional underground tracks in the railway station was suggested and confirmed by a referendum.
In 2002, an architectural competition was held for the new Löwenstrasse transit station, won by the architect Jean-Pierre Dürig [de]. On 22 December 2006, the Federal Office of Transport approved the building of the tunnel and a third underground four-track Löwenstrasse station. In September 2007, construction began on the project, nicknamed Durchmesserlinie (cross-city link). On 14 June 2014, the new platforms and tunnels were opened.
The new line runs from the Altstetten railway station, crosses the Zürich HB station throat on a bridge, and leads into the underground Löwenstrasse station. From there, it goes through the new, approximately 5 km (3.1 mi) long Weinberg Tunnel in a long left-hand curve under the existing Zürich HB–Stadelhofen line. It then ends at the level of the portals of the existing Wipkinger Tunnels in Oerlikon, where it connects with the northbound lines, including the line to Zürich Airport and Winterthur.
In 2007, the SBB and Deutsche Bahn entered into a station partnership between the Zürich HB and the Berlin Hauptbahnhof to promote knowledge sharing between operators of similarly sized stations.

## Layout and facilities

vteZurich Main Station Map :
Legend :
Surface level :
Subterranean platforms :
Key :

### Layout

The station is aligned approximately east to west, at the northern edge of the city centre and the northern end of Bahnhofstrasse, the city's main shopping street. North of the station are the Platzspitz park and the Swiss National Museum (Landesmuseum). East of the station is the river Limmat with two bridges, the Walchebrücke and the Bahnhofbrücke.
The station is split over three principal levels, with the ground level housing sixteen terminal platform track and the station's main concourse. Below this level are a series of pedestrian passageways, the ShopVille shopping centre, and the course of the Sihl river. At the lowest level, and parallel to the terminal platforms at ground level, are ten underground platform tracks, of which two are terminal (Gleis 21–22) and eight are through (Gleis 31–34, 41–44).
The station's main concourse itself comprises two sections. To the east is the Haupthalle (lit. 'Main Hall'), which was the train hall of the 1871 station but is now a pedestrian circulation space, sometimes also used for events and exhibits. The Haupthalle is surrounded on three sides by station buildings, whilst to the west it opens onto the Querhalle (lit. 'Cross Hall'), which stretches across the head of the ground level terminal platforms. These platforms, comprising two side platforms and seven island platforms, are sheltered by the 1933-built train shed and are served by tracks (German: Gleis) numbered 3 to 18.
At the subterranean middle level, the station site is crossed north to south by four pedestrian passageways (Passage). The eastern three of these, the Passage Bahnhofstrasse, the Passage Löwenstrasse and the Passage Gessnerallee, form an interconnected complex with the ShopVille shopping complex and give direct access to all the station's platforms as well as to the surrounding streets. An intermediate underground level, immediately below the Haupthalle, connects these passageways with the concourse. The westernmost passage, the Passage Sihlquai, lies to the west of the Sihl, which passes under the station from north to south at the same level as the passageways. Because of the presence of the river channel, the Sihlquai passage has no direct connection to the other passageways, but it connects to streets to the north and south of the station, and to all platforms except that serving tracks 21 and 22.
At the lowest level, there are three groups of underground platforms. The most southerly are terminal tracks 21 and 22 of the Zürich HB SZU station, with a single island platform, and accessible only to trains on the SZU's Sihltal (S4) and Uetliberg (S10) lines. To the north of these are two island platforms serving tracks 31 to 34, known as the Löwenstrasse station, which link to the station's western and southern rail approaches, and to an eastern approach via the Weinberg tunnel from Oerlikon station. Some distance to the north of these are two further island platforms serving tracks 41 to 44, known as the Museumstrasse station, which also link to the station's western and northern approaches, and to an eastern approach via the Hirschengraben Tunnel from Stadelhofen station.

### Facilities

Underneath the Bahnhofplatz and the station is the large underground shopping centre called "ShopVille" of over 200 shops or other businesses. It benefits from the Swiss employment law rule that while generally labour on Sundays is not allowed, it is allowed in "centres of public transport". The huge underground "Rail City" is, therefore, usually bustling on Sundays even while the streets of Zurich are largely empty. The western underpass (between Sihlpost and Sihlquai) also contains shops and take aways. Between 2018 and 2023, the south wing of the station building, facing Bahnhofplatz, was renovated. It features shops, restaurants and ticket offices.
Events take place regularly in the Haupthalle, including "open air" cinema; vegetable, flea and Christmas markets; and events such as skating, beach volleyball and the "warm up" for the Street Parade.
Since 8 June 2009, Zürich HB has been the site of the first SBB Lounge. This waiting room was exclusively for holders of a first-class general subscription or a valid international first-class ticket or for frequent traveller program members of the Railteam partner railways. However, the lounge was closed in 2016.
The station also has its own chapel, jointly run by the Evangelical Reformed and the Roman Catholic churches, but open to travellers of all denominations or religions. The chapel is located on the intermediate underground level, immediately below the Haupthalle.
Between 2009 and 2020, the Europaallee building complex was constructed on the former rail yard of the Sihlpost, located west of the Zürich HB station building. The site features several shops, restaurants and offices. The Europaallee is connected with the district north of the railway tracks via the Negrellisteg (lit. 'Negrelli pedestrian bridge'), which opened in 2021, and with the station's platforms via the western underpass.

### Station bells, clock and lights

There are station bells above the rear exit of the large hall. In the 1847 station, bells rang before each departure of the Spanisch-Brötli-Bahn. The signal order prescribed as follows: "10 minutes before the departure of a train, one [bell]; 5 minutes before the same, two [bells]; and immediately prior to departure, three bells". For the 1871 renovations, the architect Jakob Friedrich Wanner gave the station clock the place of honour in the portal above the main entrance, and the bells were placed in a small tower in the east facade.
On 12 September 2006, to commemorate the station's 150th anniversary, the ETH Zürich installed the NOVA, a three-dimensional, bivalent display, which consists of 25,000 individually addressable light balls. It represents a play of light of several colours, but can also represent cinematic sequences. It is expected to remain hanging in the station until further notice.

## Operation

Zürich HB is served by more than 2,900 trains daily. In 2018, it had an average of 471,300 passengers each working day. The station is busy at all times, with trains running from 05:00 until 01:00 during the week. From Friday night to Sunday morning, trains run also all night as part of the ZVV Nachtnetz (nighttime network).

### Tracks

The station has four distinct groups of tracks (Gleis), giving a total of 26 tracks:
* Tracks 3–18 are terminal tracks located at ground level, served by two side platforms and seven island platforms. These are used by long-distance trains from throughout Switzerland, and by international trains such as the EuroCity, Cisalpino, InterCityExpress and TGV. A few S-Bahn services (S21, S24, S25, S42) also depart from these tracks.
* Tracks 21 and 22 are underground terminal tracks, served by a single island platform, and located on the southern side of the station. This platform is known as Zürich HB SZU and is used by SZU operated S-Bahn services S4 and S10, heading south and west towards Sihl valley and Uetliberg, respectively.
* Tracks 31–34 (Löwenstrasse station) are underground through tracks, served by a pair of island platforms, and located just to the north of tracks 21 and 22. These are used by long-distance trains and S-Bahn services S2 S8 S14 and S19 running to and from Oerlikon station via the Weinberg Tunnel.
* Tracks 41–44 (Museumstrasse station) are underground through tracks, served by a pair of island platforms, and located on the northern side of the station. These are used by S-Bahn trains running via the Hirschengraben Tunnel and Zürich Stadelhofen station (services S3, S5, S6, S7, S9, S11, S12, S15, S16, S20, S23).
* The surface platforms (tracks 3–18)
* The Zürich HB SZU platform (tracks 21–22)
* The Löwenstrasse platforms (tracks 31–34)
* The Museumstrasse platforms (tracks 41–44)

### International services

The following international trains call at Zürich Hauptbahnhof:
* Intercity Express: four round-trips per day over the Zürich–Baden line to Hamburg-Altona and two round-trips to Chur.
* TGV Lyria: five round-trips per day over the Zürich–Baden line to Paris.
* EuroCity:
   * Transalpin: Single round-trip per day over the Zürich–Winterthur line to Graz.
   * Ten trains per day over the Lake Zürich left-bank line to Bologna, Genoa, Milan, or Venice.
   * Six round-trips per day over the Zürich–Winterthur line to Munich.
   * Single round-trip per day over the Zürich–Baden line to Hamburg-Altona.
   * Single round-trip per day over the Zürich–Baden line to Frankfurt (Main) Hauptbahnhof.
* InterCity: Hourly service over the Zürich–Winterthur railway to Stuttgart.
* Railjet Express: Four round-trips per day over the Lake Zürich left-bank line to Vienna, Budapest, or Bratislava.
* Nightjet / EuroNight:
** Overnight train over the Zürich–Baden line to Amsterdam.
** Overnight train over the Lake Zürich left-bank line to Graz, Vienna, Prague, Budapest, or Zagreb.

### Domestic long-distance traffic

The following long-distance services call at Zürich Hauptbahnhof:
* EuroCity/InterCity: half-hourly service over the Lake Zürich left-bank line to Lugano (EuroCity continues to Milano).
* InterCity:
   * Half-hourly service over the Zürich–Baden and Zürich–Winterthur lines between Geneva Airport/Lausanne and Rorschach.
   * Hourly service over the Zürich–Baden and Lake Zürich left-bank lines between Basel SBB and Chur.
   * Hourly service over the Zürich–Baden line to Lausanne.
   * Hourly service over the Zürich–Baden and Zürich–Winterthur lines between Spiez and Romanshorn; service every two hours from Spiez to Brig and Interlaken Ost.
* InterRegio:
   * Hourly service over the Lake Zürich left-bank line to Chur.
   * Hourly service over the Zürich–Baden and Zürich–Winterthur lines between Basel SBB and Zürich Airport.
   * Two trains per hour over the Zürich–Baden line to Bern.
   * Hourly service over the Zürich–Baden line to Basel SBB.
   * Half-hourly service over the Lake Zürich left-bank line to Lucerne.
   * Service every two hours over the Lake Zürich left-bank line to Locarno.
* RegioExpress:
   * Hourly service over the Zürich–Baden line to Schaffhausen.
   * Hourly service over the Zürich–Baden line to Aarau.

### S-Bahn services

Since the commissioning of the Zürich S-Bahn in May 1990, the Hauptbahnhof has been the central node of the Zürich S-Bahn Stammnetz (core network). As such, it is the nodal point where S-Bahn lines S2, S3, S5, S6, S7, S8, S9, S12, S14, S15, S16, S19, S20, S21, S24 and S25, the Sihltal Zürich Uetliberg Bahn (S4 and S10) and Zürich trams interconnect.
* S2 Zürich Flughafen –Oerlikon–Zürich HB–Thalwil–Pfäffikon SZ–Ziegelbrücke Stops between Zürich Enge and Ziegelbrücke only in Thalwil, Horgen, Wädenswil, Richterswil, Pfäffikon SZ, Altendorf, Lachen and Siebnen-Wangen.
* S3 (Bülach–) Hardbrücke–Zürich HB–Effretikon–Wetzikon Extended from Hardbrücke to Bülach during rush hour, operating non-stop from Glattbrugg.
* S5 Zug–Affoltern am Albis–Zürich HB–Uster–Wetzikon–Rapperswil–Pfäffikon SZ Stops between Stadelhofen and Wetzikon only in Uster.
* S6 Baden AG–Regensdorf-Watt–Hardbrücke–Zürich HB–Uetikon
* S7 Winterthur–Kloten–Hardbrücke–Zürich HB–Meilen–Rapperswil Operates non stop between Stadelhofen and Meilen, Winterthur and Effretikon, stops in Kemptthal as of 9:20 PM.
* S8 Winterthur–Wallisellen–Oerlikon–Zürich HB–Thalwil–Pfäffikon SZ (–Ziegelbrücke) Operates non stop between Winterthur and Effretikon; first and last services extended to Ziegelbrücke.
* S9 (Schaffhausen–) Rafz–Hardbrücke–Zürich HB–Uster Operates every 30 minutes between Schaffhausen and Rafz only during rush hour, otherwise every hours.
* S11 Aarau–Lenzburg–Dietikon–Zürich HB–Zürich Stettbach–Winterthur–Seuzach/Sennhof-Kyburg (–Wila) Operates non stop between Stettbach and Winterthur; the lines to Seuzach and Sennhof-Kyburg are operated alternately at hourly intervals; supplementary trains to Wila.
* S12 Brugg AG–Zürich HB–Zürich Stettbach– Winterthur–Schaffhausen/Wil SG Operates non stop between Stettbach and Winterthur; the lines to Schaffhausen and Wil SG are operated alternately at hourly intervals.
* S14 Affoltern am Albis–Zürich HB–Oerlikon–Uster–Wetzikon–Hinwil Operates non stop between Zürich Altstetten and Zürich HB.
* S15 Niederweningen–Hardbrücke–Zürich HB–Uster–Wetzikon–Rapperswil Stops between Stadelhofen and Wetzikon only in Uster.
* S16 Zürich Flughafen –Hardbrücke–Zürich HB–Herrliberg-Feldmeilen (–Meilen) Extended in the evening to Meilen.
* S19 (Koblenz–Baden–) Dietikon–Zürich HB–Oerlikon–Effretikon (–Pfäffikon ZH )
* S20 Uerikon–Zürich HB–Hardbrücke Operates only during rush hour; stops between Männedorf and Stadelhofen only in Meilen and Küsnacht ZH.
* S21 Regensdorf-Watt–Hardbrücke–Zürich HB Operates only during rush hour; non-stop between Oerlikon and Regensdorf-Watt; morning services to Zürich HB and evening services to Regensdorf-Wall also stop in Zürich Affoltern.
* S23 Zürich HB–Zürich Stadelhofen–Winterthur–Frauenfeld–Romanshorn Operates only during rush hour; morning services to Zürich and evening services to Romanshorn; stops between Stadelhofen and Amriswil only in Winterthur, Frauenfeld, Weinfelden and Sulgen.
* S24 Thayngen/Weinfelden–Winterthur–Zürich Flughafen –Wipkingen–Zürich HB–Thalwil–Zug Services stop in Kemptthal until 9:20 PM; the lines to Thayngen and Weinfelden are operated alternately at hourly intervals; stops between Neuhausen and Winterthur only in Andelfingen.
* S25 Zürich HB–Pfäffikon SZ–Ziegelbrücke–Glarus–Linthal Operates non stop between Zürich HB and Wädenswil.
* S42 Zürich HB–Othmarsingen–Muri AG Operates only during rush hour; stops between Mägenwil and Zürich HB only in Dietikon and Altstetten. Serves Mägenwil only in the direction of Muri AG and Othmarsingen only in the direction of Zürich HB.
During weekends, there are seven nighttime S-Bahn services (SN1, SN4, SN5, SN6, SN7, SN8, SN9) calling at the Hauptbahnhof, offered by ZVV:
* SN1: hourly service between Aarau and Winterthur.
* SN4: hourly service to Langnau-Gattikon.
* SN5: hourly service between Knonau and Pfäffikon SZ.
* SN6: hourly service between Würenlos and Winterthur.
* SN7: hourly service between Bassersdorf and Stäfa.
* SN8: hourly service between Lachen and Pfäffikon ZH.
* SN9: hourly service between Bülach and Uster.

### Urban public transport

Around the station, the trams and trolleybuses of the Verkehrsbetriebe Zürich (VBZ) provide local public transport services. The Hauptbahnhof is one of the most important nodes of the Zürich tramway network.
The main station is accessible from five tram and bus stops:
* Sihlquai|HB to the north next to exit Sihlquai via the most western underpass, tram lines 4, 13, and 17;
* Bahnhofquai|HB to the east via the main hall, tram lines 4, 11, 13, 14, 17 and trolleybus 46;
* Bahnhofplatz|HB to the south via traverse hall, main hall, or underground ShopVille, tram lines 3, 6, 10, 14 and trolleybus 31;
* Bahnhofstrasse|HB just south of Bahnhofplatz via main hall or underground ShopVille, tram lines 6, 7, 11, 13 and 17;
* Sihlpost|HB 300m to the south-west from exit Europaallee via the most western underpass, tram lines 3, 14 and trolleybus 31.

### Train operations

Due to its central location in Switzerland and in Europe, the station was quickly able to establish itself as an important railway junction. Most trains running through several European countries operated through Switzerland. In addition, a majority of Swiss mainline trains travelled to or from Zürich. For the clock-face timetable introduced to Switzerland in 1982, Zürich is the "pacemaker". Delays and other disruptions at Zürich Hauptbahnhof sometimes affect the whole of Switzerland.
Long-distance trains meet in Zürich on the hour and half-hour, and thus connect with each other. In cases of delays, connecting trains wait a maximum of 3 minutes beyond the scheduled departure time, except for some international trains and the late night trains. S-Bahn services do not wait for late connecting trains, but the long-distance trains - contrary to popular opinion - usually wait for delayed S-Bahn trains (also for a maximum of 3 minutes).

### Flood risk

The Sihl passes through the station in a tunnel, with platforms above and below the river, and public circulation areas to either side. The tunnel comprises 5 culverts with a length of 190 metres (623 ft) and a clear opening of 12 metres (39 ft) by 3 metres (10 ft) each. This limits the river's flow capacity, raising concerns about the capacity of the tunnel to deal with extreme flood events. Additionally, during the building of the new Löwenstrasse platforms, it was necessary to temporarily close part of this tunnel, thus reducing the capacity even further.
Some 50 kilometres (31 mi) upstream of the station lies the Sihlsee, Switzerland's largest artificial lake, which is impounded by a 33-metre (108 ft) high dam. Studies showed that a failure of this dam could lead to an 8-metre (26 ft) high flood wave reaching the Hauptbahnhof within 2 hours. This threat has led the City of Zürich to develop, publish and test evacuation plans for the affected areas of the city, and especially the station area.

### Customs

Zurich main station is, for customs purposes, a border station for passengers arriving from Germany. As such, customs checks may be performed in the station by Swiss customs officials. Systematic passport controls were abolished, however, when Switzerland joined the Schengen Area in 2008.