Suzuka has made changes to improve drainage in wet-weather conditions, with circuit modifications employed at a number of corners – including Turn 7 where Jules Bianchi crashed.
Safety at the Japanese Grand Prix venue was put in the spotlight 12 months ago when Bianchi spun off the track and crashed into a recovery vehicle.
He died in July from the injuries he suffered in the accident.
One of the factors that contributed to the Frenchman's accident was that streams of water had run on to the track at Turn 7 after rain intensified in the closing stages of the race.
As a result of what happened, Suzuka has installed porous asphalt stripes and 'U' drains on the edges of the track at a number of corners – with a particular focus on Turns 1, 3, 6, 7, 13 and 18.
The newly-installed longer drains run for several metres at various points of the circuit, draining water well away from the track to avoid the chances of cars aquaplaning.
A new crane has also been positioned behind the barriers at Turn 7 too, which will be used instead of the recovery tractor that was there last year.