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Draft maintenance-of-traffic (MOT) layouts on your PDF plans, and measure takeoff quantities in the same app. Runs natively on macOS 14 or newer.
Place traffic-control signs, cones, drums, barricades, arrow boards, and pedestrian-control symbols. Add notes, arrows, and hatched work areas to show the intended layout.
Per-page scale and two-point calibration. Length, area, and count takeoffs, organized by named items and layers with quantity totals. Multiple plans in tabs.
Export marked-up and flattened PDFs, takeoff reports, CSV files, and Excel workbooks, or print through the Mac print dialog.
Core takeoff and MOT tools process plans locally. Optional AI suggestions use your own Perplexity API key and may incur separate charges.
Free download. $9.99/month or $79.99/year through the Mac App Store. Both plans include the same tools.
Does Centerline run on Mac? Yes. It is a Mac app on the Mac App Store and requires macOS 14 or newer.
What does MOT mean here? Maintenance of traffic: temporary traffic control around a work zone.
Will my plan meet agency standards? Centerline is a drafting and measurement tool. Layouts and symbols need review against your project and agency requirements; Centerline does not certify compliance or provide an engineering seal.
Can I export to PDF? Yes, marked-up and flattened PDFs.
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