![Cars stuck in heavy traffic are seen in central Riyadh. Reuters](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/GRCKCRQ7LFHJRDXB5NEDX7BUIY.JPG?smart=true&auth=c7ea0d37b6196794a36fd6494c98546dc5b97ebcfabd335c21aa1b890c294c22&width=400&height=225)
Cars stuck in heavy traffic are seen in central Riyadh. Reuters
Cars stuck in heavy traffic are seen in central Riyadh. Reuters
Traffic pollution can impair brain function in just two hours
Scientist warns drivers that air pollution can impair cognition in two hours