.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in Icelandic. (January 2022) Click [show] for important translation instructions.
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|---|---|
| Hafnarfjarðarvegur | |
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| Major junctions | |
| Northern end |  Route 41 Sæbraut |
 Route 49 Miklabraut | |
| Southern end | Route 41 Reykjanesbraut |
| Location | |
| Country | Iceland |
| Highway system | |
Route 40, known as Hafnarfjarðarvegur [ˈhapnarˌfjarðarˌvɛːɣʏr̥] in Icelandic or by its busiest stretch, Kringlumýrarbraut [ˈkʰriŋlʏˌmiːrarˌprœyːt], is one of the two major traffic arteries running across Capital Region.[2][3]