Distracted Driving Sensys Gatso March 29th, 2022 Joris Lampe
Sensys Gatso has a strong heritage ➔ The Netherlands - The world’s first speed enforcement camera 1964, the first red-light enforcement camera 1966 and the first mobile radar speed control 1980
Sensys + Gatso
➔ Sweden - Vision Zero in 1997
2015
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Our mission is to save lives by changing driving behaviour Sensys + Gatso
1.25 million road
traffic deaths occur every year
49% of all road traffic deaths are amongst pedestrians, cyclists and Motorcyclists
# 1
22%
4%
23%
cause of death among those aged 15-29
Pedestrians
Cyclists
Motorcycles
3 out of 4
road deaths are men
SOURCE: WHO
With Sensys Gatso | “257 lives were saved in the last six months, a decrease of 15.1% compared to the first half of 2012. These results are extremely encouraging. This decline is twice as large as that observed throughout the last year. This is very significant.” Manuel Valls, Prime Minister of France 3
Source:
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We are committed to improve traffic behaviour, everywhere Sensys + Gatso
The chance of dying in a road traffic crash depends on where you live
Low income countries have highest road traffic death rates 24.1 18.4
9.3 9.3 Europe
Europe
19.9 19.9
15.9
Eastern Mediterranean
Americas
Eastern Mediterranean
26.6 26.6 Africa Africa
17.0
17.4
9.2
South East Asia
High income countries
17.3
Western 17.3 Pacific Western Pacific
Middle income countries
Low income countries
Road traffic fatalities per 100,000 population
Road traffic fatalities per 100,000 population
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SOURCE: World Health Organisation, 2015
#2
#3
#4
#5
2.6
2.8
2.9
3.4
4 out of top 5 countries are ‘Sensys Gatso countries’
World
‘Cellular homicide’
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Sensys Gatso Group
Enforcement
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Phone to hand
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Phone to ear
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Setup definition »Camera positions determined »Phone positions defined »Overhead solutions excluded »Side facing solutions rejected »D (low) + D (high)
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Algorithm
Image enhancement » Local contrast
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Driver detection
» Whole image
Hand detection » Driver crop
Classifi cation » Hand » Hand with phone
Driver detection »First step in algorithm
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Hand detection »Within crop of driver
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Hand classification
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GDPR » AVG 25/05 » Data Protection Impact Assessment » Privacy policy
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System definition »Only position D (high) »T-Series (modified) »RT4Control (software)
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Site selection »Overpasses on highways »Within 45 minutes from Haarlem »Accessibility »Traffic volume on 2 lanes »Orientation »Phone use expectations
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Data collection » 4 locations
· N9 Alkmaar · N205 Hoofddorp · Industrial area Haarlem · A10 Amsterdam » 70.975 images » 1321 violations (∼2%)
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Figures » Violations per hour
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Figures » Percentage
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Data enrichment » All images reviewed manually » Annotate drivers, hands and hand with phones » Enlarge dataset
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Results Max Recall
Precision
Driver detection
99%
97%
Hand detection
98%
90%
complete
good
Hand classification 84 - 90%
85 - 66%
Overall
74 - 58%
81 - 87%
Max 21
Performance
Sensys Gatso
Accuracy
Overall, how often is it correct
99%
Misclassification
Overall, how often is it wrong
1%
Recall
When it’s actually yes, how often predicted yes
87%
False positive
When it’s actually no, how often predicted yes
1%
True negative
When it’s actually no, how often predicted no
99%
Precision
When predicted yes, how often correct
58%
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Performance Compared
Candidate offences ( = FP + TP )
True negative False Positive True Positive FN
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Real offences ( = TP + FN )
Performance Compared n = 10.000 Sensys Gatso 9.900
63 87 13
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Example images
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Example images
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Example images
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Photo by Frederick Tubiermont on Unsplash
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