SAFE
The core of this job — pulling injectors, replacing turbos and clutches, chasing air-brake leaks, rebuilding after-treatment systems, and torquing head bolts on a Class 8 engine in a cramped bay or on a roadside — is physical work in awkward, dirty, non-standardized spaces that current robotics cannot touch. AI is already eating the diagnostic-lookup layer: fault-code interpretation, service-manual search, repair-order write-ups, and parts ordering are moving to software fast. What survives is the hands, the ear for a misfire, and the accountability for signing a DOT annual inspection or a brake job that has to hold at 80,000 lbs.
Dipped in 2020, then grew past where it started.
Median pay $48,500 → $61,770 +1.9% in real terms
This line is counted by the Bureau of Labor Statistics — the one figure on this page that isn't a judgement of ours. Headcount moves on demand, offshoring, demographics and the business cycle, and automation is one term among several, often not the loudest.
So a falling line is not evidence that AI did it, and a rising one is not evidence that it won't. Both happen in this register: some occupations resist automation and shrink anyway, others are highly automatable and keep growing. The marked year is 2020.
BLS projection, 2024–2034
+2.4% 319,900 → 327,700 on the projections basis
Hard to automate, and growing
The work resists current AI and the BLS projects +2.4% more of these jobs by 2034. Note that safe does not mean well paid — several of the fastest-growing resistant occupations are among the lowest paid on the register.
Different clocks. The score is what current AI could do to this work today. The projection is how many of these jobs will exist in 2034. Everything between the two — how fast employers actually adopt, whether demand grows in the meantime — is why they can point opposite ways without either being wrong.
~26,500 openings a year on average, including replacing people who leave.
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Holding it up: embodiment . Weakest point: liability shield .
Tasks largely resist digitisation Diagnostics-by-code is genuinely being automated, but nothing in software drops a transmission, presses a wheel seal, replaces a DPF, or reseats a leaking air line on a trailer parked in gravel — that's why this sits at 16 rather than a clean 19.
Hands-on in uncontrolled environments You work under a chassis on your back, on a creeper in a bay with no climate control, on roadside calls in weather, and inside engine compartments where reaching the No. 6 injector means removing the valve cover by feel — the only reason it isn't 20 is that some of the shift is at a laptop running OEM software like Cummins INSITE or DDDL.
Certification preferred, not legally required No state licence is required to turn wrenches on a Class 8 truck, but FMCSA 396.19 requires you to be a qualified brake inspector to sign off brakes and 396.17 inspections, and ASE T-series plus 609 refrigerant certification is what shops hire on — a real credential gate, just one the shop owner and motor carrier ultimately carry the DOT liability for.
Meaningful discretion Deciding whether a cracked frame rail, a marginal drum thickness, or an intermittent ABS fault means out-of-service or another 10,000 miles is your call with an 80,000 lb vehicle and a CSA score behind it; it stops short of 16+ because OEM service specs, wear limits, and FMCSA appendix criteria give you hard numbers to hang most decisions on.
The verdict above describes this occupation as a whole. Almost nobody does the typical version of a job — tick what's actually in your week and see how your own mix sits.
Your task mix speaks to task resistance (16/20 here) — how much of the day's work current AI already does. That is the dimension the boxes above are about.
It cannot move the other three. Liability shield (9/20) is whether the law requires a licensed human to sign. Trust premium (11/20) is whether buyers specifically pay for a person. Judgment and accountability (13/20) is whether the role exists to own consequential calls. Those are facts about the occupation's standing, not about which tasks are in your week — a paralegal who does only trial exhibits still holds no licence. Together they are 33 of this occupation's 68 points (49%).
Embodiment (19/20) is also a property of the work rather than the worker, but we don't tag individual tasks as physical or not, so the picker can't tell you anything about it. That's a limit of this tool, not a claim.
Did we get the list right? Tell us what's missing — the tasks are written from the outside, and you're reading this from the inside.
The moves above are yours to make. This is the other half: what would have to change in the world for the occupation itself to score higher. None of it is in any one person's gift, but it is where the floor actually comes from. Scores here are not a one-way ratchet. Only two of the five dimensions — task resistance and embodiment — track what machines can do. The other three track law, what buyers will pay for, and who is answerable, and those move in both directions, often in response to the same pressure AI creates. If every lever below landed, this occupation would score around 83/100, still SAFE.
High-voltage certification for battery-electric and hydrogen buses/trucks becoming a legally required, individually held credential (NFPA 70E-style qualified-person rules, OSHA enforcement on live HV work) so that a named certified human must sign off on pack service and isolation.
Genuine two-tier job: as fault-code interpretation, manual lookup, parts ordering and repair-order write-up move to software, the residual day is intermittent faults, wiring-harness chafe, after-treatment root-cause, and post-collision structural judgment — the tier no diagnostic model closes. No law needed; visible where dealer groups already have AI triage front-ends.
FMCSA already requires a qualified brake inspector (49 CFR 396.25) and a signed annual inspection report (396.17/396.21). A rule change making the individual technician — not just the motor carrier — personally sanctionable when a signed inspection precedes a brake-related crash, or a state adopting technician licensure for heavy-vehicle brake and steering work (as some states have floated in the wake of CVSA out-of-service data), would push this well up.
Fleet liability insurers or self-insured carriers writing policy conditions that require documented ASE-certified (T-series) human inspection of brakes and steering at set intervals, refusing coverage for AI/remote-diagnostic-only sign-off — analogous to insurer-mandated crane and boiler inspection clauses.
Task-mix shift plus formalization: if OEM telematics auto-schedules routine service, the remaining human call is the out-of-service / 'is this truck safe to load' decision. A CVSA or carrier policy making that determination a named-technician written judgment (rather than a dispatcher's call) raises ownership of the consequential call.
The limit. Embodiment at 19 is effectively capped — roadside and cramped-bay work is the hard ceiling for robotics and there is no route upward. Trust premium is structurally limited: fleet buyers purchase uptime and cost-per-mile, not human craftsmanship, so gains there must come through insurer or warranty conditions rather than customer preference.
| New York-Newark-Jersey City, NY-NJ | 12,430 | $75,780 +23% |
| Chicago-Naperville-Elgin, IL-IN | 8,660 | $65,680 +6% |
| Dallas-Fort Worth-Arlington, TX | 7,940 | $60,390 -2% |
| Houston-Pasadena-The Woodlands, TX | 7,410 | $60,770 -2% |
| Los Angeles-Long Beach-Anaheim, CA | 6,520 | $77,380 +25% |
| Atlanta-Sandy Springs-Roswell, GA | 5,940 | $62,270 +1% |
| Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 4,490 | $64,550 +5% |
| Minneapolis-St. Paul-Bloomington, MN-WI | 4,290 | $73,730 +19% |
| San Jose-Sunnyvale-Santa Clara, CA | 720 | $88,980 +44% |
| Urban Honolulu, HI | 540 | $85,040 +38% |
| Seattle-Tacoma-Bellevue, WA | 3,740 | $82,330 +33% |
Ryder and Kodiak Robotics opened a Houston "truckport" facility to support autonomous truck operations, per Heavy Duty Trucking.
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