"Only 10 minutes after Tamador al-Yami got behind the wheel police stopped her," activist Eman al-Nafjan told AFP, adding that Yami carries an international driving licence and was with another woman who was filming her in the car.
Tamador's husband was called to the scene and she was forced to sign a pledge not to drive again without a Saudi licence, said Nafjan on her Twitter account.
Women are not allowed to drive in Saudi Arabia.
Elsewhere in Khobar, in Eastern Province, another woman drove for two hours, accompanied by her husband, without being stopped, Nafjan said.
Activists say Saturday was chosen as a "symbolic" date as part of efforts first launched more than a decade ago to press for the right for Saudi women to drive.
The call for action is a "reminder of the right so it is not forgotten," activist Nasima al-Sada had told AFP.
The absolute monarchy is the only country in the world where women are barred from driving, a rule that has drawn international condemnation.
Saturday's action is a continuation of a campaign launched on October 26, when 16 activists were stopped by police for defying the ban.
COMMENTS (6)
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5 billion to upgrade Lebanon Army to meet the challenge of Hezbollah, 5 billion for Egypt and no upgrade for its own citizen.
A dirty minded country with inhuman and obsolete laws. Its days are numbered. No oil can save them.
I dont understand this ban on women driving by KSA
No money can buy modern outlook. Saudis are stuck in medieval ages and will not change unless they run out oil or world moves away from carbon based economy.
In other news, almost 9 people die Everyday in road accidents in Riyadh only. KSA leads the world with highest mortality rate due to accidents. Roads are jam packed all day since the (rich) country has extremely poor publc transport system.
The bravery displayed by the Arabs always amazes me.