Road Surface Display Apparatus for Emergency Vehicle Lane Designation

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Solution Overview

Problem

Emergency vehicles face obstacles during travel due to lack of efficient traffic management systems that prioritize their route, leading to potential delays and hazards.

Innovation Solution

A traffic management system that sets a special lane for emergency vehicles on their scheduled route and uses display apparatuses to notify other vehicles to move over, preventing obstruction by transmitting display commands to embedded light emitting bodies or signage along the road.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a special lane is set and displayed for emergency vehicles, then emergency vehicle travel smoothness is improved, but device complexity increases due to display apparatuses and control systems

Engineering Contradiction:
Improveemergency vehicle travel smoothnessVSAvoidtraffic management system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces a traffic management server as an intermediary that coordinates between emergency vehicles, display apparatuses, and other traffic participants. The server receives travel route information, determines special lane assignments, and transmits display commands to road surface display apparatuses, thereby managing the complexity centrally rather than requiring direct peer-to-peer communication between all system components.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system segments the traffic management function into distinct modular components: the traffic management server for decision-making, display apparatuses for visual communication, and control units for execution. This segmentation allows each component to perform its specific function independently, reducing overall system complexity while enabling the special lane designation capability.

Inventive Principle:
Principle #1Segmentation

2Loss of information

If display apparatuses are deployed along the route, then information transmission to vehicles is improved, but manufacturing and installation cost increases

Engineering Contradiction:
Improvetraffic information transmission effectivenessVSAvoidsystem deployment cost
Core Design Contradiction:
Loss of informationVSEase of manufacture

Solution Approach 1:

The display apparatuses are designed with multi-functionality, serving both as special lane indicators for emergency vehicles and as general traffic information displays for regular vehicles. The road surface display units can display different information patterns depending on the situation, reducing the need for separate dedicated signaling systems and thereby lowering overall deployment costs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces traditional mechanical or static signage systems with electronically controlled road surface display apparatuses that can be remotely programmed and updated via the traffic management server. This substitution reduces the need for physical manufacturing and installation of multiple fixed signs, as the same infrastructure can dynamically display different information as needed.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Loss of time

If the system dynamically adjusts lanes based on emergency vehicle routes, then response time is reduced, but system complexity increases

Engineering Contradiction:
Improveemergency vehicle response timeVSAvoiddynamic lane control system complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The traffic management server receives and processes emergency vehicle travel route information in advance before the vehicle arrives at each segment of the route. By determining special lane assignments and transmitting display commands beforehand, the system prepares the road infrastructure in advance, allowing emergency vehicles to immediately use the designated lanes without delay, while the complexity is managed through automated preprocessing rather than real-time complex calculations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11488473B2Apparatus, method, and system for setting a special lane for traveling of an emergency vehicle
Publication Date: 2022.11.01 TOYOTA JIDOSHA KK
  • US11488473B2 patent drawing
  • US11488473B2 patent drawing
  • US11488473B2 patent drawing

AI summary

An object of the present disclosure is to enable an emergency vehicle to travel more smoothly to a destination. An information processing apparatus sets a special lane for traveling of an emergency vehicle on a road on a scheduled travel route along which the emergency vehicle travels to reach a destination. Furthermore, the information processing apparatus transmits a display command to display the special lane to a display apparatus that displays information along a lane on a road surface of the road on the scheduled travel route.