Carrier profile · USDOT 3176118 · Updated Jun 13, 2026

Keystone Sign Service LLC

2 power unitsMT HOLLY SPRINGS, PA50/100
AUTHORITY STATUS UNKNOWN
Verified linkskeystonesignservice.comFMCSA SAFER

Operations & Lanes

Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base
MT HOLLY SPRINGS, PA
406 REAR NORTH BALTIMORE AVENUE
Density
fewermore
Shade = roadside inspections, last 24 mo.