The junction of Main Street and Fair Green Hill in Cavan town centre
The R901 is a very short route through the centre of Cavan. It is of secondary importance now to the main R212 north-south route traversing the town, but before the construction of Farnham Street in the early part of the 19th century – as a very early "inner bypass" catering to the coaching traffic on the important Enniskillen to Dublin road – what is today the R901 had been Cavan's principal thoroughfare. Main Street nevertheless remains the commercial heart of the town – and just as congested as it no doubt was 200 years ago.
Although somewhat lightly signed as such (especially at intermediate intersections, as far as those unfamiliar with the town are concerned!) the R901 is one-way (southbound) thoroughout.