Abu Dhabi Police warned drivers against leaving their cars idling while doing errands or shopping.
If caught, people could be fined Dh500 ($136) for leaving their car engine on, the state news agency Wam reported.
Motorists were also told not to leave their cars running when going into shops at petrol stations, or to ATMs.
The reminder comes ahead of the GCC and Mena Regional Dialogue For Climate Action in Abu Dhabi on Sunday.
The US special envoy on climate, John Kerry, will be attending the high-level discussions on advancing global action to halt climate change.
The transport sector causes about 23 per cent of all emissions from human activity, according to the United Nations Economic Commission for Europe.
Wam reported on Friday that the UAE's plans to reduce emission rates included encouraging residents to use mass transport options such as the Dubai Metro, public buses, or hybrid taxis.
The launch of the Etihad Rail project is also expected to reduce carbon emissions from the transport sector, because the train will significantly reduce the number of cars and freight vehicles on the roads.
In pictures: Etihad Rail project
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The Etihad Rail network will stretch from Abu Dhabi to Fujairah when complete -
Maithaa Al Remeithi is Etihad Rail's first female train controller. All pictures by Victor Besa -
Maithaa Al Remeithi has turned a childhood love of trains into her dream career -
Maithaa Al Remeithi plays an integral role in the UAE's rail sector -
Each day, two freight trains leave the depot at Etihad Rail to transport granulated sulphur from gasfields in Shah and Habshan to an export point in Ruwais -
The depot in Mirfa serves as the centre of operations for Etihad Rail -
Any one train can take up to 110 wagons, can travel at speeds of 120 kilometres an hour and, at full length, can reach about 1.2km -
It is full speed ahead for Etihad Rail's expansion plans -
Located a few kilometres inland in a large open expanse, two train tracks which serve Etihad Rail span 264km
