Predictika · Vocational truck powertrain and chassis orders

An AI sales agent's vocational truck order, checked before it goes out

An AI sales agent prepares an order for a Peterbilt Model 567 vocational truck for a fictional gravel and aggregate hauler: engine rating, transmission, weights, axles, rear suspension and lift axles. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published ratings and limits and returns a verdict, every reason and the figures it computed.

Scope: Peterbilt Model 567 orders with PACCAR MX-11, PX-9 and CARB MX-13 engines: ratings, TX-12 Pro limits, weights, axles, rear suspensions and lift axles. See everything this validator covers

This validator models Peterbilt Model 567 powertrain and chassis orders built on the PACCAR engines listed below, not just the scenarios shown on this page.

  • Engine ratings — the published 2024 horsepower and peak-torque ratings of the PACCAR MX-11 (EPA 2024), PACCAR PX-9 (EPA 2024) and CARB 2024 MX-13; the PX-9 Fire Service-only ratings are not orderable on a Model 567; the horsepower and torque the quote states must match the rating selected.
  • Transmission and weight limits — the PACCAR TX-12 Pro is engineered for up to 1,000 lb-ft of engine torque and a 70,000 lb gross combination weight rating; the MX-11 is listed for a maximum operating weight of 110,000 lb and the CARB MX-13 for 140,000 lb; the Model 567 is offered at up to 100,000 lb GVWR.
  • Axles, suspensions and lift axles — front axle ratings of 12,000 to 22,800 lb; single or tandem drive axle layouts with the rear suspensions and ratings published in the Peterbilt heavy-duty body builder manual (Air Trac, Reyco 79KB, Air Leaf, Low Air Leaf, Flex Air, Low Low Air Leaf, Reyco 102, Neway ADZ, Hendrickson HMX EX and RT-650); up to 4 factory lift axles rated 8,000 to 23,000 lb.

Any Model 567 order that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Peterbilt publishes no price list, so this validator produces no price build-up or line-item quote), the EPA MX-13 and the Cummins engines, multi-torque ratings, published limits of transmissions other than the TX-12 Pro, tridem drive axles, cab, hood, sleeper and interior options, and body installation.

The AI sales agentBuilds the truck order from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A transmission limit that depends on the engine rating and the weightOnly with care
The torque limit applies to the rating chosen on another line and the weight limit to a third; each pairing is its own rule to write and to keep current.		The engine rating, transmission and weights are in one request and the limits are checked together.
Ratings that exist only for fire serviceOnly with care
A product rule per rating. It works, but every new rating or application is another rule to maintain.		The rating, the engine and the model are checked together, and the reason says why the rating cannot be ordered.
A rear suspension that is published only at certain ratings for each axle layoutOnly with workarounds
Each suspension has its own list or range of ratings per layout, so a rep needs a table of allowed combinations that interacts with the layout choice.		Layout, suspension and rating are in one request, so the mismatch is found whichever order the choices arrive in.
Stated horsepower and torque that must match the ratingOnly with care
A stated figure is a free-entry field; a rule can compare it with a computed value, but someone has to write and maintain that comparison.		The stated figures travel with the order and are compared with the rating on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the order is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The engine rating on the quote is not one of the published ratings of the selected engine.
2The PX-9 ratings of 380 hp at 1,150 lb-ft, 400 hp and 450 hp are Fire Service ratings only; the Model 567 PX-9 is offered up to 380 hp and 1,250 lb-ft.
3The quote states 430 hp, but the engine rating selected delivers 400 hp.
4The quote states 1,650 lb-ft of peak torque, but the engine rating selected delivers 1,450 lb-ft.
5The quote states 445 hp, but the engine rating selected delivers 400 hp.
6The quote states 1,700 lb-ft of peak torque, but the engine rating selected delivers 1,450 lb-ft.
7The PACCAR TX-12 Pro is engineered for engines with up to 1,000 lb-ft of torque; the engine rating selected delivers 1,050 lb-ft.
8The PACCAR TX-12 Pro is engineered for engines with up to 1,000 lb-ft of torque; the engine rating selected delivers 1,450 lb-ft.
9The PACCAR TX-12 Pro is engineered for a maximum gross combination weight rating of 70,000 lb; the quote has 75,000 lb.
10The PACCAR MX-11 has a maximum operating weight of 110,000 lb; the quote has 120,000 lb.
11The 2,024 CARB PACCAR MX-13 is listed for a maximum of 140,000 lb; the quote has 150,000 lb.
12The Model 567 is offered at up to 100,000 lb GVWR; the quote has 105,000 lb.
13Model 567 front axle ratings run from 12,000 to 22,800 lb; the quote has 11,000 lb.
14Model 567 front axle ratings run from 12,000 to 22,800 lb; the quote has 23,000 lb.
15The rear suspension on the quote is not offered for the selected drive axle layout (single or tandem).
16The rear suspension selected is not published at a rating of 40,000 lb.
17The rear suspension selected is not published at a rating of 48,000 lb.
18The rear suspension selected is not published at a rating of 25,000 lb.
19The rear suspension selected is not published at a rating of 50,000 lb.
20Peterbilt installs up to 4 lift axles from the factory; the quote has 5.
21Factory lift axles are rated from 8,000 to 23,000 lb; the quote has 6,000 lb.
22Factory lift axles are rated from 8,000 to 23,000 lb; the quote has 25,000 lb.
23The quote states 420 hp, but the engine rating selected delivers 400 hp.
24The quote states 1,450 lb-ft of peak torque, but the engine rating selected delivers 1,250 lb-ft.
25The PACCAR TX-12 Pro is engineered for engines with up to 1,000 lb-ft of torque; the engine rating selected delivers 1,250 lb-ft.
26The PACCAR TX-12 Pro is engineered for a maximum gross combination weight rating of 70,000 lb; the quote has 120,000 lb.
27Factory lift axles are rated from 8,000 to 23,000 lb; the quote has 30,000 lb.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. PX-9 with a suspension rating: A PX-9 400 hp truck with an Air Leaf suspension rated 40,000 lb

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR PX-9 (EPA 2024) engine at 400 hp and 1,250 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Peterbilt Air Leaf rear suspension rated 40,000 lb, a front axle rated 14,600 lb, 52,000 lb GVWR and 60,000 lb GCWR, and no lift axles. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Fire service rating on a Model 567. The PX-9 ratings of 380 hp at 1,150 lb-ft, 400 hp and 450 hp are Fire Service ratings only; the Model 567 PX-9 is offered up to 380 hp and 1,250 lb-ft.
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  • Rear suspension rating not offered. The rear suspension selected is not published at a rating of 40,000 lb.
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2. PX-9 with a suspension rating: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR PX-9 (EPA 2024) engine at 380 hp and 1,250 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Peterbilt Air Leaf rear suspension rated 40,000 lb, a front axle rated 14,600 lb, 52,000 lb GVWR and 60,000 lb GCWR, and no lift axles. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Rear suspension rating not offered. The rear suspension selected is not published at a rating of 40,000 lb.
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3. PX-9 with a suspension rating: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR PX-9 (EPA 2024) engine at 380 hp and 1,250 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Peterbilt Air Leaf rear suspension rated 38,000 lb, a front axle rated 14,600 lb, 52,000 lb GVWR and 60,000 lb GCWR, and no lift axles. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. The engine rating delivers 380 hp and 1,250 lb-ft of peak torque; the quote has 60,000 lb GCWR.
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4. CARB MX-13 with the TX-12 Pro: A 510 hp CARB MX-13 truck with the TX-12 Pro transmission at 80,000 lb

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR MX-13 (CARB 2024) engine at 510 hp and 1,850 lb-ft of peak torque, the PACCAR TX-12 Pro transmission, a tandem drive axle with the Neway ADZ rear suspension rated 52,000 lb, a front axle rated 22,800 lb, 80,000 lb GVWR and 80,000 lb GCWR, and no lift axles. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Torque above the TX-12 Pro limit. The PACCAR TX-12 Pro is engineered for engines with up to 1,000 lb-ft of torque; the engine rating selected delivers 1,850 lb-ft.
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  • Weight above the TX-12 Pro limit. The PACCAR TX-12 Pro is engineered for a maximum gross combination weight rating of 70,000 lb; the quote has 80,000 lb.
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5. CARB MX-13 with the TX-12 Pro: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR MX-13 (CARB 2024) engine at 510 hp and 1,850 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Neway ADZ rear suspension rated 52,000 lb, a front axle rated 22,800 lb, 80,000 lb GVWR and 80,000 lb GCWR, and no lift axles. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. The engine rating delivers 510 hp and 1,850 lb-ft of peak torque; the quote has 80,000 lb GCWR.
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6. MX-11 weight and lift axles: An MX-11 445 hp truck at 120,000 lb with five lift axles

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR MX-11 (EPA 2024) engine at 445 hp and 1,700 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Hendrickson HMX EX rear suspension rated 46,000 lb, a front axle rated 20,000 lb, 90,000 lb GVWR and 120,000 lb GCWR, and 5 lift axles rated 20,000 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Weight above the MX-11 limit. The PACCAR MX-11 has a maximum operating weight of 110,000 lb; the quote has 120,000 lb.
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  • Too many lift axles. Peterbilt installs up to 4 lift axles from the factory; the quote has 5.
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7. MX-11 weight and lift axles: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Peterbilt Model 567 for Ridgeline Aggregates with the PACCAR MX-11 (EPA 2024) engine at 445 hp and 1,700 lb-ft of peak torque, the PACCAR TX-18 transmission, a tandem drive axle with the Hendrickson HMX EX rear suspension rated 46,000 lb, a front axle rated 20,000 lb, 90,000 lb GVWR and 110,000 lb GCWR, and 4 lift axles rated 20,000 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. The engine rating delivers 445 hp and 1,700 lb-ft of peak torque; the quote has 110,000 lb GCWR.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares an order for a Peterbilt Model 567 vocational truck for a fictional gravel and aggregate hauler: engine rating, transmission, weights, and more. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published ratings and limits and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote a Peterbilt Model 567 for Ridgeline Aggregates. It is ready to send. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
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  5. Blocked, with two findings, all in one answer. The PX-9 ratings of 380 hp at 1,150 lb-ft, 400 hp and 450 hp are Fire Service ratings only; the Model 567 PX-9 is offered up to 380 hp and 1,250 lb-ft. The rear suspension selected is not published at a rating of 40,000 lb.
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  6. The validator returned two blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for ratings that exist only for fire service, a rules-based CPQ is error-prone for this.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the engine rating to 380 hp and the stated horsepower to 380.
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  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. The rear suspension selected is not published at a rating of 40,000 lb.
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  12. One finding cleared; still blocked on rear suspension rating not offered.
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  13. The agent resubmits once more.
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  14. The revised request. It changes the rear suspension rating to 38,000 lb.
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  15. It calls the validator once more.
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  16. This time the validator clears it.
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  17. The earlier finding is cleared, and the validator's figure matches the quote.
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  18. Two problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer.
    19.