New 30km/h speed limit zones coming to Mayo by next Spring

The proposed bylaws enabling the speed limit changes must be formally adopted by the end of October, while the new 30km/h zones themselves must be fully established and in place by March 31, 2027.

By Jack Good Published 20th Jul 2026, 19:00 BST File Photo The proposed bylaws enabling the speed limit changes must be formally adopted by the end of October, while the new 30km/h zones themselves must be fully established and in place by March 31, 2027. Sign up to our Mayo Live newsletter Sign up Thank you for signing up! Did you know you can manage your profile, and explore all of the available newsletters from Mayo Live within your account.

Motorists across Co. Mayo are set to see a wave of new speed limits in built-up and urban areas over the coming months, the Roads and Sustainable Travel SPC meeting of Mayo County Council heard.

The national speed limit review, which focuses specifically on towns, villages, and other urban areas, is now well underway, with a public consultation due to open in August 2026.

John Cairns, Senior Executive Engineer within the Road Design Section at Mayo County Council, outlined the timeline the council is now working towards. Two deadlines were set out in a circular received by the council: the proposed bylaws must be formally adopted by October 30, 2026, while the new 30km/h zones themselves must be fully established and in place by March 31, 2027.

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Work on the project began in earnest in January of this year, after the council received the relevant circular back in October 2025. Since then, municipal districts and elected members have been assessing each built-up and urban area individually, a process that culminated in a completed schedule of proposed bylaws by the end of March.

That schedule has since been shared with Transport Infrastructure Ireland (TII) for feedback on any proposals affecting national roads. Once a response is received, the council expects to finalise its draft bylaws by the end of this month, clearing the way for the next — and, according to Cairns, most important — phase: public consultation.

The consultation period is expected to run through August 2026. Submissions received will then be assessed and compiled into a report, which Cairns noted is being prioritised given that the programme is running somewhat behind schedule. The report on submissions, together with the final bylaws, will then go before councillors for formal adoption at the October plenary meeting.

Cllr Damien Ryan struck a note of caution, arguing that 30km/h limits need to be applied selectively rather than broadly. He said such limits work well in areas of genuine "critical mass and pedestrian activity," but warned that extending them too far beyond where they're truly needed risks making them "non-functional" — with drivers' speeds creeping back up once they no longer perceive any real danger. A common-sense approach, rather than a blanket rollout across former 50km/h zones, was his central message.

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Cllr Richard Finn shifted the discussion toward enforcement, arguing that signage alone will do little without a credible deterrent behind it. He called on the council to press TII and central government for greater investment in speed cameras, particularly on national primary and secondary roads, pointing to existing installations on the N17 and N5 as examples of what he described as notable successes.

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Drawing a comparison with road-safety measures used in other countries — informally known as "sleeping policemen" — he suggested that better camera infrastructure could free up Garda resources currently tied up running repeated checkpoints, allowing them to focus on other duties.

Finn also argued that mobile speed vans should be deployed more unpredictably, rather than concentrated at locations that have become widely known and effectively avoided. Beyond the speed limit changes themselves, councillors also raised the timing of hedge cutting, calling for earlier action to improve sightlines and safety, particularly at junctions.

With the public consultation set to open in August, residents and road users across Mayo will soon have their opportunity to weigh in on where new 30km/h zones should — and shouldn't — apply. The council will then move to finalise its bylaws ahead of the October plenary meeting, with all zones required to be physically established by the end of March 2027.