Ring I (pronounced "ring one", Finnish: Kehä I, Swedish: Ring I) is the busiest road in Finland, carrying up to 113,000 vehicles per day. It is the innermost of the three beltways in the Helsinki capital region, numbered as regional route 101 and runs from the easternmost part of Espoo to Itäkeskus in eastern Helsinki. The total length is 24.2 kilometres (15.0 mi), of which 16 km (9.9 mi) are in Helsinki. It is primarily intended for local traffic—before the large road numbering change in the 1990s and the reconstruction of Ring III, Ring I was also designated as a bypass for avoiding Helsinki centre.

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You can help expand this article with text translated from the corresponding article in Finnish. (June 2023) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Finnish Wikipedia article at [[:fi:Kehä I]]; see its history for attribution. You should also add the template {{Translated|fi|Kehä I}} to the talk page. For more guidance, see Wikipedia:Translation.

Quick Facts Regional Road 101, Route information ...

Regional Road 101
Yhdystie 101 (Finnish) Förbindelseväg 101 (Swedish)
Ring I Kehä I Ring I
Route information
Length	24.2 km (15.0 mi)
Major junctions
From	Itäväylä
To	Länsiväylä
Location
Country	Finland
Major cities	Helsinki
Highway system
Highways in Finland

Close

Ring I has at least two lanes per direction for its entire length but a speed limit that never exceeds 80 kilometres per hour (50 mph) owing to heavy traffic. With the introduction of new grade-separated interchanges, provisions have been made to increase the speed limits to 70–80 km/h^{[clarification needed]}. Eventually, all of the junctions on Ring I will be upgraded to grade-separated interchanges. However, the road was not originally constructed as a motorway, which limits its capacity.^{[clarification needed]}.

• Ring II
• Ring III^[1]
• Itäväylä
• Länsiväylä
• Tuusulanväylä
• Vihdintie