Public transport links in the Helsinki region are based on a trunk route network

The trunk route network is a key priority in the development of public transport links in the region. Rail services and trunk bus routes form a network of frequent services that connects the key centers in the region and enables easy travel.

Trunk routes provide metro-like service with frequent headways. Waiting times are short and you don’t have to rely on timetables. Thanks to punctual operation of services, there is plenty of space for all passengers.

Trunk routes offer

Accessible travel

High-quality passenger information

There are digital information displays at trunk bus route stops as well as on board the buses that provide real-time information during your journey. Stop and platform displays show the next departures and the onboard displays show the next stop.

There are also next stop announcements. The HSL app makes travelling even easier: the app allows you to buy tickets, search for routes as well as to track your journey in real-time.

Download the HSL app

Fast and reliable services

Trunk route buses have traffic signal priorities. Our goal is that trunk route buses would have more designated public transport lanes and streets, which would reduce journey times.

The average speed of trunk route buses is higher than that of other services, allowing for a high-quality service without increasing operating costs.

Moreover, the new vehicles are at the forefront of environmental friendliness: rail vehicles and many buses on the trunk routes are powered by electricity.

An orange trunk route bus and a man on the street.

Buying a ticket when traveling on trunk route services

You can board trunk route buses also through the middle doors. You must show your valid ticket to a ticket inspector or the driver upon request. Using the middle doors speeds up boarding, which is why trunk route buses spend less time at stops compared to other buses.

You must have a valid ticket when traveling on trunk route services, just like on any other HSL public transport vehicle. You can buy a ticket conveniently using the HSL app. Please make sure that your ticket is visible in the app before boarding. You can also buy a ticket with contactless payment or with value stored on your HSL card directly after boarding. Tickets are also available at sales and service points and ticket machines.

Find a suitable ticket

Trunk route services

The trunk route services operate in areas where public transport demand is high. They provide clear and direct transport links between the key centers in the Helsinki region.

The trunk route network comprises 13 commuter train lines, two Metro lines, 13 trunk bus routes and one light rail line.

Below, there is a map displaying all the trunk route services.

Commuter trains

On the Coastal Line: A, E, L, U, X, Y
On the Ring Rail Line: I, P
On the Main Line: K, R, D, Z, T

See commuter trains on map

Metro

M1: Kivenlahti-Vuosaari
M2: Tapiola-Mellunmäki

See the Metro lines on a map

Light rail

15: Itäkeskus-Keilaniemi

Trunk bus routes

20, Eira–Munkkivuori

30, Eira–Myyrmäki

40, Pelimannntie 23–Elielinaukio

200, Elielinaukio–Espoon keskus

300, Elielinaukio–Myyrmäki

400, Kamppi–Vantaankoski

500, Itäkeskus (M)-Munkkivuori

510, Herttoniemi (M)–Kivenlahti(M)

520, Matinkylä (M)–Suurpelto–Leppävaara–Myyrmäki–Martinlaakso

530, Matinkylä (M)–Espoon keskus–Jorvi–Myyrmäki

560, Rastila (M)–Myyrmäki

570, Helsinki Airport–Mellunmäki

600, Railway Square–Airport

Light rail line 15 waiting at a stop with the word HSL written on the destination sign.

Light rail line 15 strengthened the trunk route network in 2023

Light rail line 15 began operating between Itäkeskus and Keilaniemi in October 2023. Trunk bus route 550 was withdrawn on 30 December 2023, as it was replaced by the light rail line.