AUTOMATED SPEED ENFORCEMENT
Calculation Audit Trail
Corridor
Corridor Name
Monroe Expressway
Gantry A
NC 84 Gantry
Gantry B
US 74 Gantry
Surveyed Distance
5.4 mi
Enforcement
Posted Limit
65 mph
Active Threshold
75 mph (posted + 10)
Subject Vehicle
Plate (Synthetic)
DEMO-2281
Vehicle Class
Truck
Read 1 — Gantry A
Gantry
NC 84 Gantry
Location
Monroe Expressway near NC 84 (Indian Trail)
Coordinates
35.0830, -80.6600
Timestamp
2026-07-21T10:25:17.112
Plate Read Confidence
87.4%
Read 2 — Gantry B
Gantry
US 74 Gantry
Location
Monroe Expressway near US 74 (Monroe)
Coordinates
35.0180, -80.5610
Timestamp
2026-07-21T10:29:34.541
Plate Read Confidence
97.0%
Time-Over-Distance Calculation
Surveyed Distance
5.4 mi
Elapsed Time
04:17.429 (MM:SS.mmm)
Calculated Avg Speed
75.5 mph
Posted Limit Delta
+10.5 mph
Threshold Check
Active Threshold
75 mph
Result
EXCEEDED
Magnitude over Threshold
+0.5 mph
Edge Case Checks
Inferred Stop Between Gantries
None
Plate Read Confidence A ≥ 95%
FAIL
(87.4%)
Plate Read Confidence B ≥ 95%
PASS
(97.0%)
Timestamp Anomaly Check
PASS
Confidence Score
92.2
/ 100
Methodology: confidence score is the mean of the two plate read confidences, adjusted for any failed edge case check. Reads below 95% trigger a flag for review. Stop-time and timestamp-anomaly failures suppress automatic issuance.
Payment
Status
Unpaid
Date Paid
not yet paid
Payment Method
Not yet paid
Fine Amount
$150.00
Reviewer
Reviewer
Pending review