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The self-driving Chrysler Pacifica vans operated by Alphabet-owned Waymo didn’t know they were under surveillance, but indeed they were. Reporters from the Arizona Republic were on their tail, watching as the autonomous vans — safety driver behind the wheel — tooled around the streets of the Phoenix, Arizona metro area for a period in October. In total, the rolling stakeout covered 170 miles of sun-drenched roadway.

Earlier this week, Waymo announced it had become the first company to offer a commercial ride-hailing service (“Waymo One”) using autonomous vehicles, even though there’s still a live human being behind the wheel. That employee’s job is to monitor the vehicle and take over if needed, as self-driving tech is still in its early days. There’s bugs to be worked out.

What the newspaper’s surveillance showed was that vehicles operating “by the book” — ie, with a strict adherence to the rules of the road and an abundance of caution — sometimes don’t mix well with humans. Go figure.

We knew this already. Last summer, a Waymo Pacifica was filmed attempting to merge onto a Phoenix-area freeway, to no avail. The cushion of safety built into the self-driving vehicle’s actions sometimes means a maneuver you or I would accomplish with ease (or maybe with a little bit of forcing, in the case of merging) proves impossible within the parameters dictated by the vehicle’s computer overlords.

One interesting interaction observed by the Arizona Republic crew came as multiple lanes of traffic were slowed approaching the site of a serious car crash. A police officer was routing everyone around the accident site.

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“The self-driving Waymo awkwardly, slowly, rolled towards the scene, even as dozens of other vehicles merged into the turn lanes far sooner,” the paper wrote. “A human driver in this situation might try to make eye contact with the drivers already in the crowded turn lane, or even wave, to try to cut in.”

After some hesitation and a failed attempt, the Waymo van finally got in line.

waymo-pacifica

Lane changes apparently give the vans the most trouble, and merging falls into this category. The Republic noted numerous instances of failed lane changes after the vans chickened out of a maneuver they had already initiated. Sometimes, just the turn signal comes on, then shuts off, with no changing of lanes. This can happen multiple times before the lane change is accomplished. These vans like their buffer zone; the lane change will not occur until the vehicle is damn sure it won’t come into close proximity of another vehicle.

One lane change took a minute and 23 seconds to pull off in moderate, flowing traffic, the publication stated. This repeated, half-hearted attempt to change lanes “appeared to confuse [other] drivers.”

An Early Rider participant, Reid Beer (solid name, by the way), said his van sometimes missed an exit on the highway “because it was being too cautious.”

While missed exits and longer trips are an annoyance for customers, the alternative would be to take on additional risk. Imagine the bad PR resulting from news stories about the brash self-driving van that caused a pile-up on the freeway or bashed another vehicle out of its lane. There’s trade-offs to erring on the side of caution, and Uber aptly demonstrates the other side of the coin.

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Waymo officials say they’ve spent months working on making the vehicles more “assertive,” hoping to cut down on the number of instances where a vehicle fails to merge.

Continuing on the topic of safety, the Republic reporters did witness moments when Waymo’s caution spared the vans from disaster. One incident took place at an intersection a Waymo van was about to cross. The Waymo faced a green light, but a Honda Element approaching from the right apparently hadn’t noticed their light turn red. The van stopped short of the intersection while the Element skidded to a stop in the center of the intersection. In another incident, a Waymo van entering a freeway aborted a merge to avoid an aggressive driver attempting to pass.

Does the credit for these interventions go to robots or humans? Waymo won’t say who or what tapped the brakes or grabbed the wheel in those incidents.

The specially selected members of Waymo’s Early Rider program, which offered up free rides earlier this year, won’t be travelling far afield via Waymo One. The vans operate in a specific area that’s been extensively mapped (“geofenced”), comprising areas of Chandler, Mesa, Tempe, and Gilbert, Arizona — though the company says this area will expand over time. Eventually, new paying riders will be able to sign up and the Pacificas will start shedding their safety drivers.

While Waymo succeeded in being the first company to tap a potentially lucrative market, it desperately wants to avoid the kind of black eyes suffered by rival Uber. As such, it’s starting small.

[Image: Waymo]





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