Lane Crossing Assistance Using Cross-Traffic Arrival Time
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Solution Overview
Problem
Inexperienced or elderly drivers, as well as those in adverse weather or low-light conditions, often find it difficult to determine if there is sufficient time to cross a lane of traffic while turning or proceeding straight at an intersection.
Innovation Solution
A lane crossing assistance system utilizing radar, video, or vehicle-to-vehicle communication to detect oncoming traffic, determining if it is safe to accelerate and merge, and providing optical or acoustic signals for guidance, with the option to automatically adjust acceleration to prevent unsafe entry into intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If drivers manually assess intersection safety, then they maintain full control over vehicle operation, but they may fail to accurately judge sufficient time to cross traffic lanes due to inexperience, age, or adverse conditions
Solution Approach 1:
The system introduces an intermediary assistance system that acts as a mediator between the driver's decision-making and the actual vehicle control. The system provides timing assessments and warnings to the driver, who retains final control authority. This intermediary layer enhances the driver's situational awareness and judgment accuracy without completely removing driver autonomy.
Solution Approach 2:
The system implements feedback by continuously monitoring traffic conditions, calculating time-to-collision, and providing real-time warnings or recommendations to the driver. The feedback loop includes detecting cross-traffic vehicles, computing whether sufficient time exists to clear the intersection, and communicating this information back to the driver through visual or audible alerts, enabling the driver to make more informed decisions.
2Reliability
If the system provides detailed acceleration guidance and automatic control, then intersection safety is improved, but the device complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: a detection module for identifying cross-traffic vehicles, a calculation module for computing time-to-collision and acceleration requirements, a decision module for determining safety margins, and a control module for executing acceleration commands. This segmentation allows each module to perform its specific function independently, reducing overall system complexity while maintaining high reliability.
Solution Approach 2:
The system performs preliminary calculations of required acceleration and time-to-collision before the driver needs to make a decision. By pre-computing safety parameters and preparing control commands in advance, the system reduces the complexity of real-time decision-making and ensures that all necessary data is ready when the driver needs it, improving both safety and response time.
3Reliability
If the system monitors multiple traffic lanes and provides comprehensive warnings, then collision prevention is enhanced, but the loss of information increases due to excessive alerts
Solution Approach 1:
The warning system provides local quality by tailoring the type and intensity of alerts to the specific situation and driver needs. Different warning levels are provided based on the severity of the potential collision risk: subtle visual cues for minor risks, more prominent auditory warnings for moderate risks, and urgent alerts with haptic feedback for critical situations. This localized adaptation of warning quality ensures that information is conveyed clearly without overwhelming the driver with unnecessary alerts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances safety by providing drivers with timely and accurate assessments of intersection safety, preventing collisions by ensuring vehicles do not enter intersections when it is unsafe to do so, and assisting in smooth navigation through intersections.
Implementation Method 1
A lane crossing assistance system utilizing radar, video, or vehicle-to-vehicle communication to detect oncoming traffic
Implementation Method 2
A lane crossing assistance system utilizing radar, video, or vehicle-to-vehicle communication to detect oncoming traffic
Data Source
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AI summary
Systems and methods are described for a lane crossing assistance system for a vehicle. An electronic controller is configured to automatically detect a first crossing lane intersecting with a current lane occupied by a host vehicle. The electronic controller determines, based at least in part on sensor data received from the at least one object sensor mounted on the host vehicle, whether a crossing vehicle is present in the first crossing lane and moving towards an intersection of the first crossing lane and the current lane occupied by the host vehicle. The electronic controller then calculates a first lane crossing vehicle arrival time and a first lane crossing time. A cross traffic guidance indicator is configured to produce an indication perceivable by a driver of the host vehicle that the intersection cannot be crossed by the host vehicle under current conditions.