API Documentations - DecisioQ Vehicle Inspection & Testing Developer Integration Manual

DecisioQ Vehicle Inspection & Testing Developer Integration Manual

How software developers should incorporate DecisioQ into inspection station, emissions testing, safety inspection, mobile inspection, compliance, audit, appointment, and certificate management systems.

Vehicle Inspection & Testing Industry Edition

1. Purpose and Scope

This manual explains how developers in the Vehicle Inspection & Testing industry should embed DecisioQ into operational software. The guide focuses on inspection centers, emissions testing networks, mobile inspection providers, dealership pre-delivery inspection platforms, fleet inspection systems, and government or third-party compliance workflows.

DecisioQ should not replace certified measurement equipment or statutory pass/fail rules. It should be used to coordinate multi-criteria operational decisions around inspection routing, exception handling, retest prioritization, certificate issuance workflows, technician assignment, customer communication, and audit-ready decision history.

Best-Fit Decisions for Vehicle Inspection & Testing

Which inspection lane, station, or technician should handle a vehicle based on vehicle class, required tests, equipment availability, and appointment promise time?
Should a result be marked pass, fail, advisory, retest required, manual review, or regulator escalation after deterministic rules and evidence checks are applied?
Which defects should be prioritized for customer repair recommendations based on severity, safety risk, recurrence, and regulatory impact?
Which failed emissions test should be routed to retest, waiver review, repair referral, or fraud/compliance review?
Which mobile inspector should be dispatched based on geography, certification, equipment, workload, and customer SLA?
Which stations, inspectors, or test devices should be flagged for quality review based on anomaly patterns and override frequency?

2. Industry System Architecture

Vehicle inspection systems usually combine scheduling, identity verification, VIN decoding, test equipment, inspection forms, photo/video evidence, certificate issuance, payment, and regulatory reporting. DecisioQ should sit in the backend orchestration layer after the system has normalized inspection data and before a workflow action is finalized.

Component	Integration responsibility
Customer / vehicle intake	Captures VIN, plate, odometer, vehicle class, owner, fleet account, appointment, inspection type, and jurisdiction.
Inspection workflow engine	Controls test sequence, inspection checklist, form completion, photo capture, evidence validation, and retest logic.
Testing equipment layer	Receives emissions analyzer, brake tester, OBD-II, opacity, alignment, headlamp, tire, or safety test outputs.
DecisioQ API	Evaluates operational and compliance criteria, ranks workflow alternatives, and returns recommended routing, escalation, or approval actions.
Certificate and reporting system	Issues pass certificates, retest notices, repair advisories, waiver packets, audit records, and regulator submissions.
Analytics and governance	Stores decision IDs, template versions, override reasons, station metrics, inspector quality signals, and compliance evidence.

Recommended Integration Pattern

Call DecisioQ from trusted backend services, never directly from public kiosks, browsers, or mobile clients.
Keep statutory pass/fail thresholds in deterministic rules or certified equipment integrations, then use DecisioQ for workflow routing and explainable multi-factor decisions.
Store DecisioQ decision IDs with inspection records, certificates, retest notices, waiver reviews, and audit packets.
Version templates by jurisdiction, vehicle class, inspection type, and effective date so historical decisions remain traceable.

3. Industry-Specific Decision Workflows

Decision workflow	Developer use case	Example criteria
Inspection lane assignment	Route vehicle to correct lane, bay, or mobile route	Vehicle class, required equipment, appointment time, queue length, technician certification, equipment status
Technician / inspector assignment	Select qualified inspector	Certification, workload, vehicle type, conflict-of-interest flag, skill, shift status, language preference
Result disposition	Recommend pass, fail, advisory, retest, review, or escalation	Rule result, defect severity, evidence completeness, prior failures, jurisdiction policy, anomaly risk
Emissions retest routing	Route failed emissions test	OBD readiness, emission values, repair history, waiver eligibility, station capacity, customer deadline
Mobile inspection dispatch	Select inspector and visit window	Distance, certification, equipment kit, route density, SLA, customer priority, travel time
Fraud / quality review	Flag suspicious inspection patterns	Override rate, repeat VINs, abnormal pass rate, missing evidence, inspector history, equipment anomalies
Certificate issuance readiness	Determine whether to issue, hold, or review certificate	Payment, identity, VIN match, evidence, test completion, result consistency, regulator rules
Repair advisory prioritization	Rank customer-facing defect recommendations	Safety severity, legal requirement, urgency, estimated cost, customer impact, repeat failure risk

4. Data Mapping for Inspection Integrations

Developers should normalize inspection data into clear criteria and alternatives before calling DecisioQ. Raw measurements are useful, but DecisioQ decisions become more reliable when supported by rule outcomes, evidence completeness, jurisdiction context, station capacity, and inspector eligibility.

Field	Type	Purpose
decisionContext	Object	Inspection type, jurisdiction, station, lane, vehicle, customer, appointment, inspector, and source-system context.
criteria[]	Array	Weighted factors such as safety severity, regulatory impact, evidence completeness, queue impact, certification match, anomaly risk, and customer SLA.
alternatives[]	Array	Possible actions: assign lane, assign inspector, issue certificate, hold for review, require retest, escalate, recommend repair, or schedule mobile visit.
scores	Object	Normalized 0-100 values for each alternative against each criterion.
metadata	Object	Correlation ID, station ID, device ID, inspector ID, template version, jurisdiction, and audit flags.

5. API Integration Example

Example: Result Disposition Request

POST /api/decision/execute
{
  "templateName": "Inspection Result Disposition",
  "criteria": [
    { "name": "Regulatory rule outcome", "weight": 35 },
    { "name": "Safety severity", "weight": 20 },
    { "name": "Evidence completeness", "weight": 15 },
    { "name": "Result consistency", "weight": 10 },
    { "name": "Customer deadline", "weight": 10 },
    { "name": "Anomaly risk", "weight": 10 }
  ],
  "alternatives": [
    { "id": "IssuePassCertificate", "scores": { "Regulatory rule outcome": 96, "Safety severity": 94, "Evidence completeness": 92, "Result consistency": 91, "Customer deadline": 80, "Anomaly risk": 88 } },
    { "id": "HoldForSupervisorReview", "scores": { "Regulatory rule outcome": 75, "Safety severity": 70, "Evidence completeness": 82, "Result consistency": 76, "Customer deadline": 65, "Anomaly risk": 90 } },
    { "id": "RequireRetest", "scores": { "Regulatory rule outcome": 62, "Safety severity": 68, "Evidence completeness": 60, "Result consistency": 71, "Customer deadline": 70, "Anomaly risk": 78 } }
  ],
  "context": {
    "correlationId": "optional",
    "attributes": {}
  }
}

Example: Decision Response

{
  "decisionId": "DQ-INSP-7fe91d",
  "templateVersion": "Inspection Result Disposition v1.8-ON",
  "rankedAlternatives": [
    { "id": "IssuePassCertificate", "score": 92.1, "rank": 1 },
    { "id": "HoldForSupervisorReview", "score": 76.4, "rank": 2 },
    { "id": "RequireRetest", "score": 66.8, "rank": 3 }
  ],
  "recommendedAlternativeId": "IssuePassCertificate",
  "explanation": "The inspection is complete, rule outcomes support issuance, evidence is sufficient, and anomaly risk is below review threshold.",
  "auditStatus": "Recorded",
  "context": {
    "correlationId": "optional",
    "attributes": {}
  }
}

6. Implementation Guides by Inspection Module

6.1 Station and Lane Management

Use DecisioQ to recommend the lane, bay, or queue position for each vehicle. The station system should calculate equipment eligibility and submit alternatives such as Lane 1, Lane 2, Emissions Bay, Heavy Vehicle Bay, Supervisor Lane, or Mobile Inspection Route.

Exclude lanes that cannot legally or technically perform the required inspection before calling DecisioQ.
Score remaining alternatives by equipment readiness, queue length, appointment promise time, inspector availability, and vehicle class.
Persist the selected lane and decision ID on the inspection job for later operational analysis.

6.2 Test Result Disposition

Result disposition should combine deterministic regulatory rules with DecisioQ routing. The inspection platform should first evaluate hard pass/fail thresholds, then use DecisioQ to decide whether to issue, hold, retest, escalate, or request additional evidence.

Do not use DecisioQ to override legal pass/fail thresholds. Use it to manage workflows, exceptions, and review queues.
Separate customer-facing explanation text from internal anomaly or fraud-risk reasoning.
Store all rule outputs, measurements, photos, device IDs, and template versions in the audit packet.

6.3 Emissions Testing and OBD-II Workflows

For emissions workflows, DecisioQ can route vehicles after readiness checks, OBD-II fault code evaluation, tailpipe readings, evaporative test results, smoke opacity tests, or waiver eligibility checks.

Emissions outcome	Recommended workflow alternatives	Relevant criteria
Readiness monitors incomplete	Reschedule, educate customer, supervisor review	Monitor count, drive cycle history, prior attempts, jurisdiction allowance
Failing pollutant value	Repair referral, retest appointment, waiver review	Measured value, threshold gap, vehicle age, prior repairs, customer deadline
OBD trouble codes present	Fail, advisory, retest after repair	Code severity, MIL status, emissions relevance, repair history
Possible test anomaly	Hold, supervisor review, equipment check	Equipment calibration, result pattern, inspector history, missing evidence

6.4 Mobile Inspection Applications

Mobile inspection apps should call backend services that enrich route and inspector data before invoking DecisioQ. The mobile app should receive a clean assignment, required test checklist, evidence capture requirements, and customer communication rules.

Rank inspectors by certification, route distance, equipment kit, workload, customer SLA, and inspection type.
Cache checklists offline, but synchronize final decision records when connectivity returns.
Attach GPS, timestamps, photos, signatures, and DecisioQ audit IDs to the completed inspection record.

6.5 Compliance and Quality Review

Compliance teams can use DecisioQ to prioritize reviews of stations, inspectors, devices, and specific inspection records. This is especially useful when many inspections are technically complete but only some require human review.

Build separate templates for record-level review, inspector-level monitoring, station-level audit, and device-level anomaly triage.
Use trend-based criteria such as override rate, abnormal pass rate, missing evidence, device calibration issues, repeat customer patterns, and late certificate submissions.
Return outcomes such as no action, sample audit, supervisor review, device inspection, inspector coaching, or regulator escalation.

7. Reference Data Model

Entity	Important fields	Where DecisioQ uses it
Vehicle	VIN, plate, year, make, model, class, odometer, fuel type, GVWR, prior inspection history	Inspection type, lane eligibility, emissions logic, retest routing
InspectionRecord	Inspection ID, jurisdiction, station, checklist, results, measurements, photos, signatures	Disposition, certificate readiness, audit history
TestDevice	Device ID, type, calibration date, software version, station, availability, error history	Lane assignment, anomaly review, evidence validation
Inspector	Certification, station, skills, shift, workload, quality metrics, conflict flags	Assignment, escalation routing, quality review
Certificate	Certificate number, status, issue/hold reason, expiry, regulator submission ID	Issuance, hold, reporting, audit traceability
DecisionAudit	Decision ID, criteria, scores, template, selected action, override reason	Compliance, reporting, analytics, continuous improvement

8. Security, Privacy, and Compliance

Use OAuth2, JWT, or server-to-server API credentials; never embed credentials in inspection kiosks, mobile apps, or public web clients.
Segment templates and access by tenant, jurisdiction, station, inspection type, and user role.
Minimize personally identifiable information in decision requests; use inspection IDs and vehicle attributes where possible.
Encrypt inspection records, photos, certificates, and decision audit data at rest and in transit.
Log user ID, station ID, inspector ID, device ID, source system, correlation ID, jurisdiction, and template version for each decision.
Apply retention policies that match regulatory requirements for inspection evidence, certificate history, and audit trails.

9. Performance and Reliability

Keep real-time customer-facing decisions fast by pre-validating vehicle eligibility, inspection type, and lane availability before calling DecisioQ.
Cache static rules and checklists, but refresh equipment status, queue length, inspector availability, and certificate status at decision time.
Use asynchronous processing for station quality reviews, nightly anomaly detection, and compliance sampling jobs.
Define fallback behavior for network outages: continue deterministic inspection capture where legally allowed, then synchronize DecisioQ routing decisions when the backend is reachable.
Monitor latency, error rate, decision volume, template version usage, override frequency, review queue size, and certificate hold reasons.

10. Testing Strategy

Test type	What to verify	Example
Regulatory boundary	Hard pass/fail rules are not replaced by DecisioQ	Failing brake threshold cannot be converted to pass by a weighted score
Workflow ranking	Expected routing is selected for common scenarios	Heavy vehicle routes to certified heavy lane when available
Evidence validation	Incomplete photos or missing signatures trigger hold/review	Certificate issuance is blocked when required evidence is absent
Emissions edge cases	OBD readiness, fault codes, and waiver logic route correctly	Incomplete monitors route to reschedule unless jurisdiction allows continuation
Security	Unauthorized users cannot alter templates or issue certificates	Inspector role cannot edit template weights or supervisor-only decisions
Auditability	Every action is traceable	Inspection record contains decision ID, template version, criteria, scores, selected action, and override reason

11. Implementation Checklist

Define initial templates: Lane Assignment, Inspector Assignment, Result Disposition, Emissions Retest Routing, Certificate Readiness, Mobile Dispatch, and Compliance Review.
Map vehicle, inspection, equipment, inspector, station, evidence, certificate, and regulatory data to DecisioQ criteria.
Create backend services that build criteria and alternatives after deterministic rule evaluation and eligibility filtering.
Persist decision IDs, template versions, ranked alternatives, explanations, selected outcomes, and override reasons in inspection records.
Add UI components that explain recommended actions clearly to inspectors, station supervisors, and customer service users.
Implement admin governance for template versioning, jurisdiction-specific effective dates, and approval workflows.
Build automated regression tests for safety, emissions, evidence, certificate, retest, mobile, and compliance scenarios.
Monitor recommendation acceptance, override reasons, review queue outcomes, retest reduction, station throughput, and compliance findings.

12. Best Practices

Use deterministic rules for legal thresholds and certified measurements; use DecisioQ for multi-factor workflow decisions, prioritization, and exception routing.
Create separate templates for safety inspections, emissions tests, commercial vehicles, mobile inspections, certificate holds, and compliance reviews.
Design customer-facing explanations that are helpful but do not expose internal fraud or anomaly scoring.
Version templates by jurisdiction and effective date so historical inspection decisions can be defended during audits.
Require reason codes for human overrides and feed those reasons into continuous improvement reviews.
Treat equipment calibration status and evidence completeness as first-class decision criteria.
Use DecisioQ audit metadata as part of the inspection record, not as a separate disconnected log.

13. Sample UI Placement

Screen	Recommended DecisioQ output	User action
Appointment booking	Recommended station, time slot, and inspection type	Confirm booking or show alternatives
Inspection dashboard	Lane and inspector assignment recommendation	Accept assignment or reroute with reason
Test result screen	Pass/fail/advisory/retest/review recommendation	Finalize, request evidence, or escalate
Certificate screen	Issue, hold, or supervisor review recommendation	Issue certificate or document hold reason
Mobile inspector app	Route order, checklist, evidence requirements	Perform inspection and synchronize result
Compliance dashboard	Ranked records, stations, devices, or inspectors for review	Open audit case or mark no action

14. Conclusion

For Vehicle Inspection & Testing software, DecisioQ is most valuable when it is embedded as an explainable decision layer inside inspection orchestration, exception routing, station operations, and compliance review. Developers should keep legal rules and certified measurement thresholds deterministic, then use DecisioQ to make the surrounding operational decisions transparent, repeatable, and auditable.

The recommended implementation pattern is to normalize inspection data, filter ineligible alternatives, execute the DecisioQ template, display the recommendation in the workflow, persist the audit trail, and continuously improve criteria weights using overrides, review outcomes, station throughput, and compliance findings.