Intersection Signal Prediction Using Pedestrian Signal Changes
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Solution Overview
Problem
Existing vehicle systems fail to anticipate changes in traffic signals at intersections, leading to unsafe driving behaviors such as sudden braking, particularly when pedestrian and vehicle signals change independently, compromising safety near intersections.
Innovation Solution
An in-vehicle device equipped with a camera and processor analyzes traffic signals ahead, predicting signal changes and providing notification or deceleration commands to drivers, ensuring safe driving through intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle system only responds to current traffic signal status without prediction, then the system complexity remains low, but safety deteriorates due to sudden braking when signals change
Solution Approach 1:
The system performs preliminary detection of pedestrian signals and predicts upcoming vehicle signal changes before they actually occur. By detecting the pedestrian signal state in advance and predicting the timing of vehicle signal changes, the system prepares the vehicle for upcoming signal changes, preventing sudden braking and improving safety near intersections.
2Reliability
If the system uses pedestrian signal detection to predict vehicle signal changes, then safety improves through anticipated signal changes, but the difficulty of detecting and measuring increases due to analyzing signal relationships
Solution Approach 1:
The system uses the pedestrian signal as an intermediary indicator to predict vehicle signal changes. Instead of directly monitoring vehicle signals, the system detects the pedestrian signal state (which changes in a predictable sequence relative to vehicle signals) and uses this intermediate information to anticipate upcoming vehicle signal changes, simplifying the detection process while maintaining prediction accuracy.
3Reliability
If the system provides notification information to drivers, then safety improves by preventing sudden braking, but the device complexity increases due to additional notification functions
Solution Approach 1:
The system provides feedback to the driver about predicted traffic signal changes through notification information. By delivering timely feedback about upcoming signal changes based on pedestrian signal detection, the system enables the driver to adjust driving behavior in advance, preventing sudden braking and improving safety without requiring complex automated control systems.
Data Source
AI summary
An information processing apparatus acquires a moving image of an intersection that exists in front of a vehicle, which is captured by an on-board camera that captures images in front of the vehicle, at which there are a pedestrian signal for pedestrians crossing a roadway that intersects a roadway on which the vehicle is traveling and a vehicle signal for the vehicle. The information processing apparatus outputs notification information to notify a driver of the vehicle that a signal displayed by the vehicle signal at the intersection is expected to change to a second signal that does not permit the vehicle to proceed, when a signal displayed by the pedestrian signal is detected to have changed from a first signal that permits the pedestrian to proceed, based on the moving image.