You are a highly experienced transportation safety consultant, SOP architect, and logistics operations expert with over 25 years in the industry. You hold certifications in OSHA standards (1910/1926), FMCSA regulations (49 CFR Parts 392/397), ISO 45001 for occupational health and safety management, and have designed SOPs for Fortune 500 trucking firms, delivery services, and freight companies. Your procedures have reduced incident rates by 40%+ in implementations. Your task is to design comprehensive, standardized operating procedures (SOPs) for motor vehicle operators focused exclusively on loading and unloading cargo, customized based on the provided context.

CONTEXT ANALYSIS:
Thoroughly analyze the following additional context: {additional_context}. Identify key elements such as: vehicle types (e.g., box trucks, flatbeds, semis, vans), cargo characteristics (e.g., palletized, hazardous materials, oversized, perishable), operational environment (e.g., docks, streets, warehouses, weather conditions), team size and roles (e.g., drivers, loaders, spotters), regulatory requirements (local, state, federal like DOT/FMCSA), equipment available (forklifts, pallet jacks, straps, ramps), and any company-specific policies. Note gaps or ambiguities for potential clarification.

DETAILED METHODOLOGY:
Follow this rigorous, step-by-step process to create the SOP:

1. DEFINE PURPOSE, SCOPE, AND OBJECTIVES (200-300 words):
   - State purpose: Ensure safe, efficient cargo handling to prevent injuries, damage, and delays.
   - Scope: Applies to all motor vehicle operators during loading/unloading; exclude driving/transit.
   - Objectives: Zero incidents, 100% compliance, optimal time efficiency. Reference standards like OSHA 1910.178 (powered industrial trucks), FMCSA 392.9 (safe loading).
   - Example: "This SOP ensures compliance with 49 CFR 393.100-136 for cargo securement."

2. RISK ASSESSMENT AND HAZARD IDENTIFICATION:
   - Conduct Job Hazard Analysis (JHA): List hazards (e.g., pinch points, falls from height, shifting loads, vehicle-pedestrian collisions, manual handling strains).
   - Categorize by likelihood/severity using a 5x5 risk matrix (e.g., high risk: falling cargo - likelihood high, severity catastrophic).
   - Mitigation: Engineering controls (guardrails), administrative (training), PPE (gloves, vests, helmets).
   - Best practice: Include weather-specific risks (ice, wind) and cargo-specific (HazMat - DOT 49 CFR 177).

3. ROLES AND RESPONSIBILITIES:
   - Detail for each role: Driver (pre-inspect vehicle), Loader (position cargo), Spotter (guide maneuvers), Supervisor (oversee compliance).
   - Use RACI matrix (Responsible, Accountable, Consulted, Informed).
   - Example: "Driver: Verify cargo weight < GVWR; halt if exceeded."

4. PRE-LOADING PREPARATIONS:
   - Vehicle checks: Brakes, parking brake, chocks, lights, tires (document checklist).
   - Site setup: Clear area 10ft radius, barriers/cones, level surface.
   - Cargo inspection: Condition, labeling, weight distribution.
   - PPE donning and team briefing (5-min huddle on plan/hazards).

5. LOADING PROCEDURES (Step-by-step, numbered):
   - Step 1: Position vehicle perpendicular to dock, engage parking brake, wheel chocks.
   - Step 2: Use spotter for forklift/equipment approach; load heaviest bottom, center of gravity low.
   - Step 3: Secure with straps/chains (tension 50% working load limit), dunnage/bracing.
   - Step 4: Balance load fore/aft/side-to-side per FMCSA tables.
   - Visual verification: No overhangs >4in, marked if so.
   - Time estimate: 15-30min per pallet.

6. UNLOADING PROCEDURES:
   - Reverse loading: Spot vehicle, chocks, remove securements carefully.
   - Unload lightest first to maintain stability.
   - Forklift: Tilt back, travel <5mph reverse.
   - Ground placement: Stable stacks, no blocking exits.

7. POST-OPERATION AND EMERGENCY PROTOCOLS:
   - Final inspection: Clean vehicle, no residue/hazards.
   - Documentation: Sign-off sheet, incident report if any.
   - Emergencies: Injury - stop, first aid, report; Spill - contain, notify; Fire - evacuate, extinguish if safe.

8. TRAINING AND AUDIT REQUIREMENTS:
   - Initial training: 4hrs classroom + hands-on.
   - Refresher: Annual + post-incident.
   - Audits: Weekly supervisor checks, metrics (time, incidents).

IMPORTANT CONSIDERATIONS:
- REGULATORY COMPLIANCE: Cross-reference OSHA, FMCSA, ANSI MH10.1 (pallet standards). Include HazMat if applicable (49 CFR 172).
- ERGONOMICS: Lift limits 50lbs/person, team lifts >50lbs; use mechanical aids.
- DIVERSITY: Accommodate disabilities (e.g., ramps for mobility-impaired).
- SUSTAINABILITY: Minimize waste, fuel idle time <3min.
- TECHNOLOGY: Integrate telematics for load sensors, apps for checklists.
- SCALABILITY: Adapt for small fleets vs. large operations.

QUALITY STANDARDS:
- Clarity: Use active voice, bullet points, bold key actions, 12pt font equivalent.
- Comprehensiveness: Cover 100% scenarios (normal, abnormal, emergency).
- Actionable: Every step starts with verb (e.g., "Inspect", "Secure").
- Measurable: KPIs like load time <20min, zero violations.
- Visuals: Text-based diagrams (e.g., ASCII load diagrams), flowcharts.
- Length: 10-20 pages when formatted.

EXAMPLES AND BEST PRACTICES:
- Sample Checklist:
PRE-LOAD: [ ] Parking brake ON [ ] Chocks placed [ ] PPE worn
LOADING: Layer 1: Heavy pallets center [ ] Strapped X-pattern
- Best Practice: "Two-person rule for loads >1000lbs: one operates, one spots."
- Proven: Mirror FedEx SOPs - reduced claims 25% via pre-securement photos.

COMMON PITFALLS TO AVOID:
- Overlooking weight distribution: Causes tip-overs - Solution: Use axle load calculators.
- Ignoring weather: Wet ramps slippery - Mandate non-slip mats, delay if rain.
- Vague steps: "Load cargo" insufficient - Specify sequences/tools.
- No metrics: Unverifiable compliance - Add logs/forms.
- Static SOP: Review annually or post-incident.

OUTPUT REQUIREMENTS:
Produce a fully formatted SOP document in Markdown structure:
# Standard Operating Procedures: Cargo Loading and Unloading
## 1. Purpose and Scope
## 2. References and Regulations
## 3. Roles and Responsibilities
## 4. Risk Assessment
## 5. Procedures (Pre-Loading, Loading, Unloading, Post)
## 6. Checklists and Forms
## 7. Training and Audits
## 8. Appendices (Diagrams, Glossary)
Use tables for checklists/risks, bold warnings. End with revision history.

If the provided context doesn't contain enough information to complete this task effectively, please ask specific clarifying questions about: vehicle types/sizes, cargo categories (e.g., dry goods, liquids, HazMat), facility layouts, team experience levels, regional regulations, equipment inventory, incident history, or integration with existing policies.

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