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| R20 (regional road) | |
|---|---|
| Country | Ireland |
| Route | 20 |
| Length km | approx. 56 |
| Terminus a | Tralee |
| Terminus b | Killarney |
| Previous route | 19 |
| Next route | 21 |
R20 (regional road) is a regional road in County Kerry, Ireland, linking Tralee and Killarney via a series of towns, villages and rural landscapes in the south-west of the island. The route provides an alternative to primary and national roads serving County Kerry tourism, agriculture and local industry, and connects with corridors to Cork, Limerick and the Beara Peninsula. It passes close to notable landmarks and cultural sites including Banna Strand, Muckross House, Ross Castle and areas of the Iveragh Peninsula.
The R20 begins on the northern outskirts of Tralee near the junction with the N21 and proceeds eastwards through the suburbs toward Cromane and the village of Kilflynn. From there it heads south-east, traversing rural sections of Kerry farmland and limestone hills before entering the market town of Castleisland, where it intersects with regional and local roads serving Listowel and the Dingle Peninsula. Continuing south, the R20 passes through or close to Scartaglin and Gneeveguilla, skirting boglands and upland pasture associated with the Slieve Mish range and the broader MacGillycuddy's Reeks outlook. Near Killarney the alignment descends toward the Killarney National Park periphery, offering sightlines to Muckross Lake and terminating close to the junctions that link to the N22 and local access to Killarney National Park attractions such as Torc Waterfall and Muckross House.
The corridor occupied by the R20 has origins in medieval droving routes and post-medieval coach roads that connected market towns in Munster. During the 18th and 19th centuries the path was improved as part of turnpike and county road schemes influenced by landowners and municipal boards associated with Tralee, Castleisland and Killarney. In the 20th century, successive legislative frameworks including the 1925 Roads Act and mid-century county development plans reclassified sections under regional designations. The modern R20 numbering was formalised in the national regional road reclassification of the 1990s, aligning with transport planning from entities such as Kerry County Council and the Department of Transport to reflect changing traffic patterns following upgrades to the N22 and N21 national routes. Archaeological sites adjacent to the route, recorded by University College Cork field surveys and the National Monuments Service, reveal earlier settlement and passageways that informed later alignments.
Key junctions along the R20 include connections with the N21 at its western terminus near Tralee, a junction with the R## regional network near Castleisland providing access to Listowel and Ballybunion, and links to local roads serving Cahersiveen direction via secondary routes. At its southern approach the R20 meets distributor roads that feed into the N22 corridor toward Killarney town centre and onward to Cork and Kinsale. The route intersects with county-managed crossroads at Scartaglin and Gneeveguilla, which are primary transfer points for agricultural vehicles, coach services and local bus routes operated by regional carriers serving stops coordinated with Kerry Community Transport and private operators. Several junctions are grade-controlled with signalled or priority arrangements, while many rural intersections remain simple T-junctions with visibility improvements implemented over time.
Traffic volumes on the R20 vary seasonally, with peak flows in summer months driven by tourism to Killarney National Park, heritage sites like Ross Castle and access to coastal destinations including Banna Strand. Freight movements are dominated by agri-food transport linked to enterprises in County Kerry and distribution to regional centres such as Tralee and Cork. Public transport usage includes scheduled regional bus services connecting market towns and commuter flows to Tralee and Killarney rail and coach hubs linking with national services at Limerick Junction and Cork Kent Station. Accident and safety reports compiled by Kerry County Council and national road safety audits indicate higher incident rates at certain bends and minor junctions, prompting targeted speed limit reviews and verge realignments influenced by recommendations from the Road Safety Authority.
Responsibility for routine maintenance of the R20 lies with Kerry County Council under funding and policy guidance from the Department of Transport. Works include pavement resurfacing, drainage improvements, winter gritting, and signage upgrades carried out as part of annual road maintenance programmes and capital investment plans. Winter and extreme weather responses coordinate with the Met Éireann forecasts and local emergency services including An Garda Síochána for incident management. Heritage and environmental constraints near conservation sites such as Killarney National Park necessitate consultation with bodies including the National Parks and Wildlife Service when planning realignments or works affecting sensitive habitats.
Proposals affecting the R20 have been discussed in county development plans and regional spatial strategies such as the Southern Regional Assembly frameworks. Potential schemes include junction safety improvements, targeted bypasses to reduce through-traffic in towns like Castleisland, cycling infrastructure connecting to the Great Southern Trail and low-emission vehicle charging points coordinated with regional climate action plans. Funding priorities and Environmental Impact Assessment processes require engagement with statutory consultees including the Environmental Protection Agency and local heritage stakeholders before implementation. Long-term scenarios consider modal shift incentives linking bus services to national corridors that include N22 upgrades and interchanges at Tralee and Killarney.
Category:Regional roads in the Republic of Ireland Category:Roads in County Kerry