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The consumer guide

Driving Automation Levels

Understand our JSL capability groups, standard SAE automation levels, and the difference between supervised hands-free assistance and eyes-off driving.

Two systems of classification appear in this guide. JSL is our consumer-facing capability grouping. SAE is the standard framework for driving automation. Our Level 3 badge means supervised hands-free assistance; SAE Level 3 means conditional automation with a different driver role.
JSL classification for autonomous cars: Level 2 means hands on and eyes on; Level 3 means supervised hands-free with eyes on; Level 4 means driverless within defined operating conditions.

Why we use the JSL classification

For a car shopper, a useful first question is simple: do I need to keep my hands on the wheel, can I drive hands-free while watching the road, or can I ride without being the driver? Our JSL classification organizes the catalog around those practical differences.

SAE Level 2 includes both hands-on assistance and supervised hands-free systems. We give the latter a separate JSL Level 3 group so readers can spot that capability quickly. This includes qualifying highway systems and low-speed traffic-jam features, each within its own limits.

Advanced assistance is often marketed as “Level 2+” or “Level 2++.” Those are informal descriptions, not additional SAE levels. They do not automatically establish hands-free permission: the exact vehicle and its operating instructions determine whether it belongs in our hands-free group.

The JSL capability timeline

The three capability groups used in our consumer guide, from assistance to driverless rides.

  1. LEVEL2

    Hands-on assistance

    Hands on · eyes on

    The system assists steering and speed while you keep your hands on the wheel, watch the road and remain responsible for driving.

    Standard classificationSAE Level 2

  2. LEVEL3

    Supervised hands-free

    Hands free · eyes on

    Hands may leave the wheel when the equipped system permits it. You still watch the road continuously and must be ready to intervene. Speed and road limits vary.

    Standard classificationSAE Level 2, often called “2+”

  3. LEVEL4

    Driverless within limits

    No driver within its operating area

    The driving system handles the trip and fallback within its defined operating conditions. Our guide covers driverless robotaxi services in designated areas.

    Standard classificationSAE Level 4 when operating driverlessly

This is a capability timeline, not a launch schedule. Manufacturers can pursue different categories in parallel.

Understanding the SAE classification

SAE International’s framework describes six levels of driving automation, from SAE Level 0 to SAE Level 5. The key distinction is who performs the driving task and who must supervise or respond when the system reaches its limits.

Unlike our JSL shopper groups, SAE Level 2 includes both hands-on and supervised hands-free assistance. SAE Level 3 changes the driver’s role: attention may shift away within the system’s permitted conditions, but the driver must still respond to a takeover request.

SAE levelWho performs the driving?Key distinction
SAE Level 0 — No driving automationThe driverWarnings and momentary safety interventions can still be present.
SAE Level 1 — Driver assistanceThe driver, with help on one functionSteering or speed assistance; the driver supervises.
SAE Level 2 — Partial automationThe driver continuously supervisesThe system assists both steering and speed, including supervised hands-free features.
SAE Level 3 — Conditional automationThe system within its operating conditionsThe driver may turn attention away where permitted, but must respond to takeover requests.
SAE Level 4 — High automationThe system within a defined operating domainThe system also handles fallback there; a driverless service can be geographically limited.
SAE Level 5 — Full automationThe system in all driver-manageable conditionsA service restricted to selected areas or conditions is not Level 5.

SAE vs JSL at a glance

CapabilitySAEJSL
Hands-on assistance22
Hands-free, eyes on23
Driverless in a defined area44

SAE Level 3 means conditional eyes-off automation. The driver must respond to takeover requests. Our JSL Level 3 label always means eyes-on supervision.

Why the SAE Level 3 headlines are changing

Mercedes-Benz: broader assistance and an SAE Level 4 programme

In 2026, electrive reported that upcoming S-Class and EQS updates would omit DRIVE PILOT, with broader-use SAE Level 2 assistance taking priority. The report describes a pause in those SAE Level 3 offerings, rather than a permanent end to every SAE Level 3 project. Mercedes-Benz has also announced an SAE Level 4 robotaxi collaboration with NVIDIA and Uber.

Read the Mercedes-Benz report → · Mercedes-Benz’s SAE Level 4 programme →

BMW: a reported return to SAE Level 2 assistance in the 7 Series

Electrive also reported that BMW planned to remove Personal Pilot L3 with the 7 Series update and focus on more widely usable SAE Level 2 assistance, often described as “Level 2+”. The report highlights cost and narrow operating conditions. It does not establish that BMW has moved all of its automation resources to SAE Level 4.

Read the BMW report →

These product decisions help explain why shoppers encounter so much supervised hands-free technology. They do not establish that the entire industry has abandoned SAE Level 3. Honda has described plans to expand SAE Level 3 through its Honda 0 Series; an announced plan is separate from a feature being approved and available on a specific US vehicle.

JSL is our way to make the capabilities in this guide easier to scan. We use it consistently alongside the standard SAE explanation, regardless of individual manufacturers’ product strategies.

What to check before buying

  1. Read the hands-free and eyes-off fields on each vehicle card.
  2. Verify the model year, trim, hardware and active service plan on the actual vehicle.
  3. Check the allowed roads, speeds and conditions against your normal trips.
  4. Follow the vehicle’s manual and driver-monitoring instructions whenever the system is active.

Compare systems

Compare Driving Assistance Systems

Compare supervised highway assistance, low-speed hands-free systems and hands-on driver assistance by road coverage, vehicle requirements and ownership cost.

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Sources & further reading

JSL is an editorial classification used by DriverlessCars.org. Manufacturer announcements describe their stated plans and do not establish US purchase eligibility.