Traffic lights may be installed on the M50 overpass close to Liffey Valley to allow buses to move quickly in and out of the city.
The National Transport Authority (NTA) has outlined changes to traffic movements around Dublin as part of the BusConnects programme, which aims to deliver 230km of dedicated bus lanes and 200km of cycle lanes on 16 of the busiest corridors in the city.
Details of the first four routes were revealed in November, when 345 homeowners on proposed corridors linking Clongriffin, Swords, Blanchardstown and Lucan to the city were told they faced losing part of their gardens to allow roads to be widened.
Details of another six have now been published, with 665 households told their properties may be affected, while 180 parking spaces and 290 trees will be removed.
The routes are Liffey Valley to the city centre, which will affect up to 60 properties; Clondalkin to Drimnagh (15 properties); Greenhills to the city centre (220); Tallaght to Terenure (40); Kimmage to the city centre (75); and Rathfarnham to the city centre (255).
The proposed traffic changes include installing traffic lights on the M50 overpass on the Coldcut Road and possibly widening the road at a later date.
"As Coldcut Road crosses over the M50, the carriageway width is restricted," the NTA plan for the Liffey Valley to the city centre corridor says.
"To overcome this restriction and maintain bus priority over this section, it is proposed to provide a bus gate with a queue relocation facility on both sides of the bridge crossing.
"The traffic signals at this bus gate will be sequenced to ensure bus priority."
Two options are proposed for Rathmines Road, which is on the Rathfarnham to city centre route.
One involves cyclists and buses travelling in both directions but only one lane for cars, which would be used by traffic leaving the city centre.
The road would be closed to traffic movements into the city centre, with traffic diverted through Ranelagh.
The second option involves buses and private cars travelling in both directions along the road, but cyclists being diverted to side streets adjacent to the Rathmines Road with a new canal crossing.
Traffic exiting the new Nat- ional Children's Hospital will only be allowed to turn left towards Old Kilmainham, but details are being developed with the hospital and Dublin City Council and may be subject to change.
NTA chief executive Anne Graham said one-to-one meetings had been offered to affected property owners on the six new routes and community forums had been established.
"In recent days we have notified the 665 property owners along these routes who may be potentially affected and offered one-to-one meetings to inform them of the proposals and listen to their feedback," she said.
"We would encourage those who received the notification to get in contact with us and engage in the consultation process that runs until March 29. We want to hear from them to get their views on the proposals."
The NTA has proposed changes to other routes following feedback from the public, a spokesperson added.
On the Swords to city centre route, concerns were raised about a proposed one-way system in Santry due to potential impact on local businesses.
An alternative proposal has been suggested, which is subject to public consultation as it could affect up to 70 properties.
Details of the final six corridors which run from Ballymun, Bray, UCD and Ringsend to the city centre, as well as Finglas to Phibsboro and Blackrock to Merrion, will be published next month. Up to 350 properties are likely to be affected.
Owners will be compensated for the loss to their properties.
Planning permission is expected to be sought for the project in the first half of next year.