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Purchasing

3 articles on purchasing.

Running the business

Your Real Margin on Sold Materials: Paint, Posts and Cones When Prices Change

How to read the margin on materials a traffic control company sells outright: cost of goods sold, what happens to margin when purchase prices change, margin versus markup with a worked example, and why a line with no cost on file shows a fake 100% margin.

Nov 10, 2026 · 7 min read

Running the business

Three-Way Match for Traffic Control Purchases: Order, Receipt and Vendor Bill

What a three-way match checks, why a vendor bill is compared with what you ordered and what actually arrived, how to choose a tolerance, and what to do when the three documents disagree.

Nov 10, 2026 · 6 min read

Running the business

Purchase Orders and Vendor Management for Traffic Control Companies

Unmanaged buying is one of the quietest margin leaks in a growing traffic control company. What a purchase order process should actually control, how to manage device and rental vendors, and where the savings really are.

Aug 8, 2026 · 5 min read