Sen. Stephen Webber, D-Columbia, is still left with questions after receiving a letter from Waymo responding to his concerns over the company’s previous testimony to a Senate committee.

While Webber’s letter focused on testimony from Waymo during a state Senate committee, new testimony from the company before Congress has left him with more questions.

Amid Waymo’s support for autonomous vehicle legislation in Missouri, a congressional hearing has revealed that remote workers in the Philippines help make decisions for Waymo’s autonomous vehicles when they get stuck.

On Feb. 4, the U.S. Senate Committee on Commerce, Science and Transportation held a hearing on the safety and oversight of autonomous vehicles. Waymo’s Chief Safety Officer Mauricio Peña testified on behalf of the company.

During questioning, U.S. Sen. Ed Markey, D-Mass., asked Peña what a Waymo vehicle does when it encounters a driving situation it cannot independently resolve.

Peña said the vehicles contact remote operators who offer guidance, noting that while some operators are U.S.-based, others are based in the Philippines.

Given this new information, Webber told the Missourian he is not satisfied with Waymo’s letter and said he is shocked by the revelation that vehicles in the U.S. may be influenced by people in the Philippines.

During an initial state Senate committee hearing on legislation to regulate and legalize autonomous vehicles in the state, Webber asked Waymo’s representative about their vehicles’ ability to interact with school buses, if there had been any incidents and about an ongoing investigation by the National Transportation Safety Board on the subject.

Webber accused Waymo of giving false testimony when the company did not disclose an accident that occurred four days before the hearing, in which a Waymo vehicle hit a child in front of a school in California. A release from Waymo on the accident does not mention involvement with a school bus.

In a letter released last week, Webber requested that the company correct the public record, disclose details about its remote call centers and law enforcement interactions, and pause its advocacy for Missouri autonomous vehicle legislation until federal investigations are complete and child safety concerns are resolved.

Waymo has responded to Webber’s letter, clarifying testimony the senator alleged was incorrect from the Jan. 27 hearing.

“During the hearing, we accurately responded to questions regarding our interactions with school buses, which have not resulted in any contact with pedestrians, and the associated NTSB field investigation in Austin,” Lara Dailey, Waymo’s Midwest policy manager, said in the letter. “The line of questioning was specific to those topics.”

Dailey added that formal investigations on the incident in California did not open until Jan. 29, two days after the hearing.

During Waymo’s testimony to the state committee last month, Dailey said that Waymo has never had an incident involving a school bus where an accident or near-contact event occurred. However, Dailey noted that incidents where Waymo vehicles did not stop fully near a school bus have now led to an investigation.

The National Transportation Safety Board has launched an investigation into the company related to vehicle failures to yield to stopped school buses, and the National Highway Traffic Safety Administration has launched an investigation into the incident involving the child pedestrian in California.

In his letter, Webber also requested more information on the remote call centers used when law enforcement needs to communicate with Waymo vehicles.

In her letter sent Monday, Dailey noted Waymo maintains a team of U.S.-based event response team operators specifically trained to serve as a direct point of contact for law enforcement.

In the event of an incident, this specialized unit is responsible for immediate engagement with officers at the scene to provide operational decisions and technical assistance, she added.