GlossaryEN1 min readUpdated: Jun 26, 2026
Statistical Process Control
Statistical Process Control (SPC) enters logistics operations wherever standardized workflows – picking accuracy, transit times, on-time delivery rates – must be kept within defined quality boundaries.
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Source: https://asq.org/quality-resources/statistical-process-control
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Check transit time: city-to-city index
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Definition & Explanation
Statistical Process Control (SPC) enters logistics operations wherever standardized workflows – picking accuracy, transit times, on-time delivery rates – must be kept within defined quality boundaries. The method continuously collects process data and plots it on control charts that mark upper and lower control limits; any reading outside these limits signals that the process warrants investigation. Developed originally for manufacturing quality assurance, SPC is now applied in freight forwarding, contract logistics and warehousing to manage service-level agreements and compliance obligations. Unlike standard KPI dashboards, SPC distinguishes random variation from systematic faults, enabling corrective action before deviations translate into customer complaints or SLA penalties.
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Transit index
Check transit time: city-to-city index
P50/P80 transit times for sea, air and road — sourced and confidence-rated, not a carrier quote.
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