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📍 Radius
3.0 km
Showing 40 zones
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Location
Type
MI Index
Facing %
★ Corrected MI ↓
CPME
Ad Fit
Hourly Traffic Curve
Hourly Dwell Score
Vehicle Type Breakdown
Direction Flow (Weekday by Hour)
30-Day MI Index Trend
Why direction-corrected MI matters
AIS counts everyone near a billboard. MI counts only vehicles actually facing it. The delta is the value PlanB can't get anywhere else.
A — Expressway zone · fast flow, vehicle-dominant
Metric
AIS reading
MI reading
Ground truth
Daily impressions
34,800
10,336
~11,000
Dwell
8.4 min (phone)
dwell 2.4 / 10
Low — fast road
Direction match
Not measured
38% facing
Only 38% see it
Agency pays for
34,800 (overstated 3.4×)
10,336 ✓
MI wins
B — CBD traffic jam · high dwell, high exposure
Metric
AIS reading
MI reading
Ground truth
Daily impressions
28,400
7,600
~9,000
Dwell quality
11.2 min
dwell 8.7 / 10
High — congested
Effective exposure
Not differentiated
4.2 sec avg view
High impact
True CPME
฿5.28 (understated)
฿19.74 ✓
MI honest price
C — Wrong direction · billboard faces East, traffic flows West
Metric
AIS reading
MI reading
Ground truth
Daily impressions
15,600 (counted all)
9,048 (facing only)
~9,000
W-bound traffic
Counted
Excluded
Back of billboard
Agency overpays
42% extra
0% error
MI saves money
Bottom line: MI direction data corrects AIS impression counts by 30–65% depending on zone type and billboard orientation. Direction-corrected MI is the only metric that represents what an advertiser actually buys — facing impressions, not pass-through counts.
Real data (GPS + direction_split)
Editorial (facing derived from road axis)
Synthetic (AIS calibrated to MI Index)
Fused (MI × AIS combined)
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