A third lane, or a bus lane, are being considered for the section between Leixlip and Maynooth, in both directions
It could be mid-2022 before options for up-grade of the M4 are presented to councillors.
Kildare County Council says they could be ready in Quarter One, or Quarter Two.
A third lane, or a bus lane, are being considered for the section between Leixlip and Maynooth, in both directions
There are also issues with capacity at the Maynooth interchanges, which are operating at "140% capacity".
An additional interchange, between Maynooth and Kilcock, is under consideration.
Fine Gael Cllr., Tim Durkan, has been speaking to Kildare Today.
Cllr. Durkan joined Ciara Noble on Monday's edition of the programme
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