Key Flagging

Provider type

Traffic Control & Flagging

Address

225 Concord Ave, Chester, PA 19013

Phone

(877) 939-4539

Website

keyflagging.com

Data downloaded

November 6, 2026 (Overture Maps)

Location

Map © OpenStreetMap contributors. Confirm the address before you drive over.

Before You Commit

Typical timing is often 1–2 weeks; emergency call-outs from some companies. Ask:

• Are your flaggers certified as my state requires?
• Can you draw and submit the traffic control plan and permit?
• Does the setup follow the MUTCD and state supplement?
• Are you insured, and can I be added as additional insured?
• What is the minimum call-out and overtime rate?

All 6 questions to ask →

Tips

• Flagger certification rules are set by each state, so check your DOT.
• Ask who is responsible for checking the setup each day and at night.
• Get the plan approved early, because road permits can take longer than the work.

Getting several quotes? Line them up in the quote comparison tool and read who pays for PPE.