Tesco has announced additional coronavirus measures will be introduced in their larger stores in the coming weeks. 

The store chain will bring out a traffic light system to help manage the flow of shoppers in and out of its stores. 

There has been a high demand for online service with people being encouraged to shop-in-store.

But chief executive of Tesco Uk and Ireland Jason Tarry also urged shoppers not to panic buy and to follow guidelines. 

Here is what you need to know about the new and previous rules: 

Traffic light system 

A simple traffic light system will be introduced at the entrances of some larger stores. 

Staff members will also monitor entrances to manage the flow of customers. 

Key-product limits

We previously reported the store chain has brought back a three-items per customer limit for key products. 

These include flour, dried pasta, toilet roll, baby wipes and anti-bacterial wipes. 

Customers shopping online will also experience limits on a small number of products including rice and canned vegetables.

READ MORE: Coronavirus: Tesco and Morrisons reinstates cap on key items

Representatives for the supermarket said availability is still high and customers are encouraged to shop as normal. 

What did the Tesco CEO say? 

CEO Jason Tarry addressed shoppers in a letter and encouraged them to follow guidelines to ensure everyone remained safe. 

He said: "Hand sanitiser and cleaning stations are available around our stores, and we continue to have social distancing guidelines and signage in place.

"When you visit our stores, please follow the legal guidance on wearing a face covering. If you forget to bring one, we have packs available to buy at the front of our stores, which you can open immediately and pay for with your shopping later.

"We continue to prioritise making our stores as safe as we can, and we are continually looking at new ways to do so – as well as monitoring government guidance to make sure we respond to any changes straightaway.

"We are very grateful to you, our customers, for continuing to follow the guidelines that help to protect us all.

"As a reminder, the police are able to issue fines for not wearing a face covering, unless you are exempt."