The Delhi Disaster Management Authority has put into force a Graded Response Action Plan (GRAP) which lists varied restrictions or different levels of the Covid-19 pandemic.

The plan would help people plan commercial activities and travel better by monitoring key parameters on the pandemic that are publicly available on central and state health websites or Covid portals.

Chief minister Arvind Kejriwal told officials on Friday at the DDMA meeting: “Now that this plan is going in front of the public, there will be a sense of certainty and accountability on our part towards the people of Delhi. The plan descriptively elaborates upon when the lockdown will be imposed and when it will be lifted.”

The plan has four levels of alerts named — yellow, amber, orange and red. A yellow alert — the lowest level — is declared if any of the following criteria are met: More than 0.5 per cent positivity rate for two consecutive days, or 1,500 cases, or 500 oxygen beds occupied in the preceding week. Similarly, for amber, the criteria is one per cent positivity, or 3,500 cases, or 700 oxygen beds occupied. For orange alert, the criteria are two per cent positivity, or 9,000 cases or 1,000 beds. Five per cent positivity, or 16,000 cases, or 3,000 beds will trigger a red alert.

Theatres, spas, entertainment parks, gyms, educational institutions are closed if any of the alerts are in force.

During a yellow alert, retail outlets will open on alternate days from 10am to 8pm, restaurants will operate with half their seating capacity as well as parks and hair stylists would be open. There is a night curfew from 10am to 5pm for the first three levels.