Road Projection Guidance for Safer Vehicle Overtaking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image projection systems on road surfaces do not enhance safety during overtaking operations, as they only project images when the target vehicle is changing lanes or turning, failing to provide critical guidance to overtaking vehicles.
Innovation Solution
An image display system equipped with a projector, rear and front sensors, and an image controller that projects support images indicating no-entry and passage areas on the road surface when another vehicle starts overtaking, using existing sensors to determine the overtaking operation and adjust image size, position, and duration for accurate and safe overtaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image projection is carried out only when the target vehicle performs certain actions (e.g., turn signal lighting), then power consumption is reduced and the system remains simple, but safety cannot be improved when other vehicles overtake the target vehicle
Solution Approach 1:
The system performs preliminary detection of overtaking operations using rear sensors before the overtaking vehicle actually enters the target vehicle's lane. The image controller identifies overtaking intent through detection results (relative velocity, steering state, turn signal state) and projects guidance images in advance, allowing the overtaking driver to recognize safe passage areas before the maneuver is completed, thereby improving safety without requiring continuous projection
Solution Approach 2:
The projector operates periodically rather than continuously - it projects images only during specific periods when overtaking operations are detected, and stops projection during normal driving conditions. This periodic operation significantly reduces power consumption while maintaining safety benefits during critical overtaking scenarios
2Reliability
If image projection is activated continuously to guide all vehicles, then safety is maximized, but power consumption increases and the system becomes unnecessarily complex
Solution Approach 1:
The system uses rear sensors to continuously monitor the environment behind the target vehicle and provides feedback to the image controller. The controller analyzes this feedback (detection results including relative velocity, steering state, and turn signal state) to determine when overtaking operations are occurring or about to occur, and activates the projector only in response to this feedback, avoiding continuous operation and unnecessary complexity
Solution Approach 2:
The system leverages existing vehicle sensors that are already equipped on most vehicles for other purposes. By repurposing these existing sensors to detect overtaking operations, the system achieves safety improvement without requiring additional dedicated sensors or complex new detection systems, thus avoiding increased device complexity
3Reliability
If the projector projects images for a long duration to ensure visibility, then safety is improved, but power consumption increases and unrelated drivers may be confused
Solution Approach 1:
The system projects the guidance image in advance when overtaking operations are first detected, before the overtaking vehicle fully enters the target vehicle's lane. This preliminary projection provides sufficient time for the overtaking driver to recognize and respond to the guidance, ensuring visibility without requiring extended projection duration that would waste energy and confuse unrelated road users
Data Source
AI summary
An image display system includes a projector that is mounted on a target vehicle and projects an image onto a road surface around the target vehicle, and an image controller that causes the projector to project a support image onto the road surface around the target vehicle when another vehicle traveling behind the target vehicle starts an operation of overtaking the target vehicle, and the support image includes at least one of an image showing a no-entry area which the other vehicle is prohibited from entering and an image showing a passage area through which the other vehicle is to pass during the overtaking operation.