Today's horrific crash on Yamuna Expressway b/w Agra and Mathura.

New Delhi: In a horrific incident, at least 18 speeding vehicles rammed into each other on the Agra-Noida Yamuna Expressway on Wednesday due to dense fog enveloping the national capital and adjoining areas. 

The video of the incident is doing the rounds on the social media.

Several people were injured in the incident.

The shocking video shows speeding cars ramming into one another, while people on the footpath were shouting and telling the drivers to slow down.

Watch the video:

The national capital and its adjoining suburbs were blanketed in a grey haze this morning, dipping visibility to 300 meters at some places, causing train delays and slowing down flight operations.

Some 30 trains coming to Delhi and 30 flights landing or taking off from the Delhi airport were delayed, according to officials.

Poor visibility also caused heavy traffic snarls at many places in Delhi and NCR. The saving grace was the absence of hundreds of school buses on the roads.

The situation is likely to worsen on Thursday as the weather department predicted "dense to very dense fog very likely" at many places in Punjab, Haryana, Chandigarh, Delhi, Rajasthan and western Uttar Pradesh.