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Deployment

Bear Flag autonomous tractor retrofit at Salinas

Autonomous retrofit kit for existing farm tractors. Bear Flag added lidar, cameras, and GPS hardware drawn from the autonomous vehicle industry to standard tractors, enabling driverless tillage and ground-prep operations. Deployed commercially in California's Salinas Valley and Central Valley from 2020. The technology was acquired by John Deere in August 2021 and contributed to the John Deere autonomous 8R tractor program announced at CES 2022.

Bear Flag autonomous tractor retrofit by Bear Flag Robotics · Operated by Bear Flag Robotics · Catalog entry · 4 sources · not yet field-verified · Agricultural robots

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Machine-readable surfaces

Church Brothers LLC (Church Brothers Farms), one of the largest produce growers in the US and based in the Salinas Valley, deployed Bear Flag Robotics autonomous tractor retrofit systems for tillage and ground preparation on their California fields starting in 2020. Church Brothers VP of Agriculture Josh Ruiz noted that the autonomous system outperformed human operators for precision: 'the work the computer is doing is actually better than what my people can do.' Bear Flag operated five 370-horsepower tractors during the 2020 season across approximately a dozen customers, charging roughly $20/acre for custom autonomous tillage.

Church Brothers was the anchor enterprise customer, tilling parts of their fields almost every day of the year and providing a high-density data collection environment. California regulations required an on-site handler monitoring each robot during field operations at the time. Bear Flag Robotics was acquired by John Deere for $250M in August 2021; its autonomous tractor technology was folded into John Deere's commercial autonomous 8R program.

Key facts

Operator
Church Brothers LLC (Church Brothers Farms), Salinas Valley CA
Deployment start
2020 (testing from 2019)
End
August 2021 (Bear Flag acquired by John Deere)
Task
Autonomous tillage and ground preparation
Crops
Lettuce and other high-value vegetables
Service model
Autonomous Tillage-as-a-Service, ~$20/acre
Fleet size
5 tractors (2020 season across ~12 customers)
Base tractor
John Deere 8RT 370 hp with Bear Flag retrofit kit

Safety record

No incidents on record for Bear Flag autonomous tractor retrofit at Salinas.

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Trust tier
Catalog entry · 4 sources · not yet field-verifiedhow tiers work →
Last updated
2026-07-22
Model
Bear Flag autonomous tractor retrofit
Company
Bear Flag Robotics
Location
United States/California/Salinas
Operator
Bear Flag Robotics
Status
ended
Operator type
maker operated
First seen
2020-01-01
ID
6d7a5945-2795-4bcd-ac1a-31d667f0283a

Timeline

  1. Jan 2020
    First recorded
    Bear Flag autonomous tractor retrofit first documented operating at Salinas.
  2. Jul 2026
    Current status: ended, reviewed
    Latest recorded state. New status transitions append here as the deployment-status recorder produces them.

On the deployment map

Bear Flag autonomous tractor retrofit operates in Salinas. Explore the full verified map:

Sources (4)

  1. Custom Autonomous Tillage and Kits to Retrofit Tractors Drive Company · https://www.dtnpf.com/agriculture/web/ag/equipment/article/2021/02/16/custom-autonomous-tillage-kits-drive · 2021-02-16
  2. AgFunder exit review: John Deere's $250M acquisition of Bear Flag Robotics · https://agfundernews.com/agfunder-exit-review-why-john-deere-acquired-bear-flag-robotics-for-250m · 2021-08-05
  3. Autonomous tractors at work for Church Brothers Farms · https://www.futurefarming.com/tech-in-focus/autonomous-tractors-at-work-for-church-brothers-farms/ · 2021-01-01
  4. Driverless tractor tech takes on Salinas · https://www.producebluebook.com/2021/03/05/driverless-tractor-tech-takes-on-salinas/ · 2021-03-05
Methodology: Verified · 4 sources (no primary) · last reviewed 2026-07-22

Verification posture

Verified

Low confidence

Review state

Stable

Last reviewed 2026-07-22

Maturity + lifecycle

Maturity stage: commercial

Lifecycle: active

Architectural position

Cohort: agriculture

Sources by quality tier

4
unclassified
Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for Bear Flag autonomous tractor retrofit at Salinas.

Common questions

What is the Bear Flag autonomous tractor retrofit deployment at Salinas?
Bear Flag autonomous tractor retrofit, built by Bear Flag Robotics, is recorded as a deployment at Salinas on the DEPLOY registry. Bear Flag Robotics operates the deployment directly.
Who operates Bear Flag autonomous tractor retrofit at Salinas?
Bear Flag Robotics, the manufacturer of Bear Flag autonomous tractor retrofit, operates this deployment directly. This is a maker-deploys-its-own-product arrangement rather than a customer pilot.
When did the Bear Flag autonomous tractor retrofit deployment at Salinas go live?
The deployment is recorded as starting January 1, 2020 on the DEPLOY registry. Earlier activity may exist but is not yet sourced.
Is the Bear Flag autonomous tractor retrofit deployment at Salinas still active?
As of the most recent verification on the DEPLOY registry, this deployment is no longer operating at this location.
Have there been incidents at the Bear Flag autonomous tractor retrofit deployment at Salinas?
No active incidents affecting this deployment are recorded on the DEPLOY registry. Absence of recorded incidents is not a guarantee no incident occurred; DEPLOY records only sourced incidents and suppresses retracted ones.

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