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Predicting real-time traffic conflicts using deep learning
- Source :
- Accident Analysis & Prevention. 136:105429
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link. Recently, technologies for predicting traffic conflicts in real-time have been gaining momentum due to their proactive nature of application and the growing implementation of ADAS technology in intelligent vehicles. In ADAS, machine learning classifiers are utilised to predict potential traffic conflicts by analysing data from in-vehicle sensors. In most cases, a condition is classified as a traffic conflict when a safety surrogate (e.g. time-to-collision, TTC) crosses a pre-defined threshold. This approach, however, largely ignores other factors that influence traffic conflicts such as speed variance, traffic density, speed and weather conditions. Considering all these factors in detecting traffic conflicts is rather complex as it requires an integration and mining of heterodox data, the unavailability of traffic conflicts and conflict prediction models capable of extracting meaningful and accurate information in a timely manner. In addition, the model has to effectively handle large imbalanced data. To overcome these limitations, this paper presents a centralised digital architecture and employs a Deep Learning methodology to predict traffic conflicts. Highly disaggregated traffic data and in-vehicle sensors data from an instrumented vehicle are collected from a section of the UK M1 motorway to build the model. Traffic conflicts are identified by a Regional–Convolution Neural Network (R-CNN) model which detects lane markings and tracks vehicles from images captured by a single front facing camera. This data is then integrated with traffic variables and calculated safety surrogate measures (SSMs) via a centralised digital architecture to develop a series of Deep Neural Network (DNN) models to predict these traffic conflicts. The results indicate that TTC, as expected, varies by speed, weather and traffic density and the best DNN model provides an accuracy of 94% making it reliable to employ in ADAS technology as proactive safety management strategies. Furthermore, by exchanging this traffic conflict awareness data, connected vehicles (CVs) can mitigate the risk of traffic collisions.
- Subjects :
- Computer science
Traffic conflict
Real-time computing
Human Factors and Ergonomics
Imbalanced data
Deep Learning
0502 economics and business
Humans
0501 psychology and cognitive sciences
Safety, Risk, Reliability and Quality
050107 human factors
050210 logistics & transportation
Artificial neural network
business.industry
Data Collection
Deep learning
05 social sciences
Accidents, Traffic
Public Health, Environmental and Occupational Health
Reproducibility of Results
Variance (accounting)
Digital architecture
Artificial intelligence
Safety
Unavailability
business
Algorithms
Predictive modelling
Subjects
Details
- ISSN :
- 00014575
- Volume :
- 136
- Database :
- OpenAIRE
- Journal :
- Accident Analysis & Prevention
- Accession number :
- edsair.doi.dedup.....4f5a11506cd52669925c69f7e793c306