Glasgow, Edinburgh, Aberdeen and Dundee are introducing low emission zones (LEZs) starting Might 31 in a bid to enhance air high quality.
The brand new scheme means many older autos will likely be 'banned' from Scotland's busiest metropolis centres.
Drivers are warned that vehicles that fail to satisfy emission requirements will be unable to drive inside the zones.
If a non-compliant automobile enters a low emission zone, a penalty cost will likely be payable by the car's registered keeper.
Grace durations are in impact as enforcement - and fines - will start on totally different dates within the 4 cities.
Enforcement won't start in Edinburgh, Aberdeen and Dundee for 2 years while Glasgow will apply a one-year grace interval lasting by means of to Might 31, 2023.
The Scottish Authorities says the purpose of LEZs are to limit entry for probably the most polluting autos and shield public well being.
Tuesday's launch marks the primary time the zones have been enforce in Edinburgh, Aberdeen and Dundee.
The scheme was first launched in 2018 when the zones utilized solely to native bus providers in Glasgow.
Nationwide shared transport charity Collaborative Mobility UK (CoMoUK) is planning group consultations in areas of a number of deprivation in every low-emission zone.
Latest analysis by CoMoUK discovered 37,993 folks have been a part of pay-per-drive automobile golf equipment in Scotland in 2021, up 24 p.c on the earlier 12 months.
Round 1 / 4 of respondents stated that saving cash was a purpose for becoming a member of the automobile membership and 73 p.c agreed that automobile membership membership saves them cash in comparison with proudly owning a automobile.
"Scotland's low emission zones provide a chance to transform our metropolis centres and scale back our reliance on the non-public automobile," stated Rachael Murphy, CoMoUK's Scotland director.
"There's, nonetheless, a danger that communities impacted by transport poverty as a consequence of a scarcity of inexpensive, accessible public and shared transport choices will wrestle to half from the non-public automobile, no matter penalty could be utilized."
She continued: "Finally, if we need to meet environmental targets and enhance air high quality, we have to transfer away from non-public automobile possession – and that requires making shared transport choices reminiscent of automobile golf equipment and bike share readily accessible for folks.
"Amid a cost-of-living disaster, motorists can even save 1000's of kilos a 12 months by not proudly owning a automobile, in addition to partaking in a extra lively life-style by means of strolling and biking."
Do not miss the most recent information from round Scotland and past - signal as much as our each day e-newsletterright here.