Renault and Racing Point became the latest teams to return to the race track, as the countdown to the start of the delayed 2020 season intensifies.
After world champions Mercedes completed a two-day session with their 2018 car at Silverstone last week to practice F1's new COVID-secure protocols for when racing resumes at the Austrian GP from July 3, two of their rivals have run similar tests.
Renault were in Austria on Tuesday and Wednesday with their own 2018 challenger to test at the Red Bull Ring, the venue for 2020's first two races.
Daniel Ricciardo completed 115 laps in their RS18 on Tuesday, with team-mate Esteban Ocon taking over on Wednesday.
The Frenchman, yet to make his race debut for the team, clocked 143 laps - the equivalent of two Austrian GP race distances.
It was the first time Ricciardo has driven for the team since his move to McLaren for 2021 was announced last month.
Meanwhile, rivals Racing Point used their 2020 car at Silverstone on Wednesday for their second permitted day of promotional filming this year. Lance Stroll carried out the test for the team.
But although Racing Point ran their current car for the first time since an eye-catching pre-season, the regulations around filming days meant they were limited to 100km on track with designated demonstration tyres.
Stroll reached the mileage limit in the morning, before rain arrived at Silverstone for the afternoon.
"Despite the nature of the day, however, the team left no stone unturned in ensuring that safety remained top priority for all team members trackside," said Racing Point.
"As part of stringent safety protocols, the event took place behind closed doors with no public access and all relevant precautions taken in terms of PPE provision."
Teams running older cars are able to complete unrestricted running.
Get set for F1's return live on Sky Sports
Seven months after the 2019 campaign concluded, Formula 1 finally gets back racing again from July 3-5 at the Austrian Grand Prix.
Eight summer races at six venues across Europe have been announced so far, with a further schedule stretching until December expected to be confirmed soon.
|July 5||Austrian GP - Spielberg|
|July 12||Steiermark GP - Spielberg|
|July 19||Hungarian GP - Budapest|
|August 2||British GP - Silverstone|
|August 9||70th Anniversary GP - Silverstone|
|August 16||Spanish GP - Barcelona|
|August 30||Belgian GP - Spa-Francorchamps|
|September 6||Italian GP - Monza|
F1 is aiming for a season of between 15 and 18 races.
All races will be live on Sky Sports F1 - the only place to watch the whole season live.
The Formula 1 season will begin on July 3-5 live on Sky Sports F1 with the Austrian GP. The race is the first of eight in 10 weeks in Europe, with every race live on Sky Sports.