Zoox grounds Atlanta test fleet after workers report toxic gas exposure symptoms
News Source
β’Wed, 23 Sep 2026 17:28:38 +0000
π° What Happened
Amazon-owned Zoox has paused its self-driving test fleet in Atlanta. Safety drivers may have been exposed to carbon monoxide, carbon dioxide or hydrogen sulfide gas inside the vehicles last month.
One worker complained to OSHA, the US safety regulator, which opened an inquiry and told Zoox to investigate. A letter seen by TechCrunch said as many as 40 workers may have been exposed, though Zoox says the number is lower.
Workers reported symptoms and strange smells through much of August. Someone called 911 for a sick worker on 22 August. The site has run at limited capacity since then, with test cars parked while Zoox investigates.
π The Backstory
Zoox modifies Toyota Highlander SUVs to add sensors and a self-driving computer. The test cars run for much of the day, which can let gases build up inside.
Zoox says it tested the exhaust systems and replaced the 12-volt batteries. Damaged batteries can give off a rotten-egg smell. It said the only gas it found was CO2 and that it will add CO2 monitors.
Zoox is expanding into new cities to chase market leader Waymo. Test drivers at both companies have reported injuries, and OSHA has since closed its inquiry.
π― Why It Matters
Self-driving cars promise safer roads, but the workers testing them face real risks. Their safety will shape how quickly robotaxis reach the public.
Amazon-owned Zoox has paused its self-driving test fleet in Atlanta. Safety drivers may have been exposed to carbon monoxide, carbon dioxide or hydrogen sulfide gas inside the vehicles last month.
One worker complained to OSHA, the US safety regulator, which opened an inquiry and told Zoox to investigate. A letter seen by TechCrunch said as many as 40 workers may have been exposed, though Zoox says the number is lower.
Workers reported symptoms and strange smells through much of August. Someone called 911 for a sick worker on 22 August. The site has run at limited capacity since then, with test cars parked while Zoox investigates.
Zoox modifies Toyota Highlander SUVs to add sensors and a self-driving computer. The test cars run for much of the day, which can let gases build up inside.
Zoox says it tested the exhaust systems and replaced the 12-volt batteries. Damaged batteries can give off a rotten-egg smell. It said the only gas it found was CO2 and that it will add CO2 monitors.
Zoox is expanding into new cities to chase market leader Waymo. Test drivers at both companies have reported injuries, and OSHA has since closed its inquiry.
Self-driving cars promise safer roads, but the workers testing them face real risks. Their safety will shape how quickly robotaxis reach the public.