A set of policies will need to be implemented by the ministries of internal affairs, finance, labor and social development before women are actually allowed on Saudi roads. It's not yet known how long it will take to craft regulations that will grant women access to driver training and licensing.
Saudi Arabia's ban on women driving has long been held as an example of the country's poor human rights record. Only recently, a Saudi cleric and government official called for the ban to remain in place, claiming that women "lacked the intellect" needed to drive. It was just one of the many absurd reasons given over the years to keep the ban in place.