The phrase "operated as normal" is correct and usable in written English.
You can use it to describe a situation that is proceeding as expected, without any notable disturbances. For example: "Despite the power outage, the restaurant was able to keep its doors open and operated as normal."
On Saturday, cross-border traffic operated as normal, allowing hundreds of South Koreans to travel to and from Kaesong.
The Delhi Metro rail, which carries several thousand passengers across the city throughout the day, operated as normal.
Although the protesters, sitting on the steps of the Federal Hall National Memorial, made two spontaneous marches around the area, the exchange operated as normal, Richard Torrenzano, a spokesman for the exchange, said.
A significant proportion of those holidaymakers are due to finish their holiday and fly home this weekend, and it is expected that those journeys will be operated as normal.
"Today has been made worse by the fact that there were road works on the A465 - it'd been closed down to one lane because of, ironically, repairs to a culvert". On public transport, Irish Ferries cancelled all of its services from Pembroke Dock on Sunday but StenaLine services from Fishguard operated as normal, while some train services were affected.
The school is said to be operating as normal as the searches continue within the vast grounds of the former Royal Albert Hospital.
The emergency operations officials were still operating as normal, he wrote.
All other subsidiaries of the Wileyfox Group continue to operate as normal and their operations remain unaffected by the WFE administration.
Cardiff Airport was open with most flights operating as normal but passengers are advised to contact their airline or tour operator before travelling to the airport.
Hotels are now operating as normal.
Flights will operate as normal from Gatwick and London City.
