By Liam Martin

BOSTON (CBS) – Self-driving vehicles will be back on the road in the Seaport. Two companies that have been testing cars in Boston have been cleared to start testing again.

Just over a week ago, Boston officials asked Optimus Ride and Nutonomy to temporarily suspend their trials involving self-driving vehicles.

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NuTonomy car in Boston (Image from NuTonomy)

The suspension was prompted after a self-driving Uber vehicle struck and killed a woman walking outside of a crosswalk in Arizona.

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Boston city officials have now completed a review of safety procedures and they say testing of self-driving vehicles is “safe and progressive.”

Uber has been using self-driving vehicles. (WBZ-TV)

The testing resumes with the following safety measures still in place: there must be emergency braking on all vehicles, a competent driver must be in the driver’s seat at all times, and testing will only be in the agreed upon, limited areas.

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Traffic officials say safety is the first priority and they are confident the streets will be safe for residents and visitors.