Williams have given the green light to running their seamless shift gearbox from the start of the season, autosport.com has learned.
The team originally designed their new Cosworth-powered FW28 with the system, which allows gear changes to take place with minimal power loss, but were unsure about whether it would be reliable enough to start the season with.
Technical director Sam Michael made it clear at the launch of the team's new car in January that the team would only race the seamless shift gearbox if it was sure it would last a full Grand Prix distance.
Following extensive testing, the team have been convinced about the gearbox's durability and sources have revealed that they have opted to use the system from the season-opening Bahrain Grand Prix.
"We are comfortable with its progression," said a Williams insider.
As a back-up, the team had the option of reverting to a standard gearbox if the seamless system was not reliable enough.
Team co-founder Patrick Head said at the car launch: "It is new technology for us and we are debugging it.
"We have got a backstop which is the same gearbox but in a slightly different configuration, but because the seamless is faster that is what we are planning to be racing."
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