AUTOMATED SPEED ENFORCEMENT
Calculation Audit Trail
Corridor
Corridor Name
Indiana Toll Road (Gary)
Gantry A
Portage Gantry
Gantry B
Gary Gantry
Surveyed Distance
9.0 mi
Enforcement
Posted Limit
70 mph
Active Threshold
80 mph (posted + 10)
Subject Vehicle
Plate (Synthetic)
DEMO-8900
Vehicle Class
Not on file
Read 1 — Gantry A
Gantry
Portage Gantry
Location
I-80/90 eastbound near Portage
Coordinates
41.5700, -87.1800
Timestamp
2026-08-19T18:28:39.565
Plate Read Confidence
99.7%
Read 2 — Gantry B
Gantry
Gary Gantry
Location
I-80/90 eastbound near Gary
Coordinates
41.6000, -87.3300
Timestamp
2026-08-19T18:34:36.568
Plate Read Confidence
87.6%
Time-Over-Distance Calculation
Surveyed Distance
9.0 mi
Elapsed Time
05:57.003 (MM:SS.mmm)
Calculated Avg Speed
90.8 mph
Posted Limit Delta
+20.8 mph
Threshold Check
Active Threshold
80 mph
Result
EXCEEDED
Magnitude over Threshold
+10.8 mph
Edge Case Checks
Inferred Stop Between Gantries
None
Plate Read Confidence A ≥ 95%
PASS
(99.7%)
Plate Read Confidence B ≥ 95%
FAIL
(87.6%)
Timestamp Anomaly Check
PASS
Confidence Score
93.7
/ 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
Paid
Date Paid
2026-09-10 06:47:10
Payment Method
Mail
Fine Amount
$300.00
Reviewer
Reviewer
Pending review