Traffic Flow Simulator Route Verification
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Solution Overview
Problem
Conventional traffic flow simulators do not record and compare route selection results across different setting conditions, making it difficult for users to verify the effectiveness of the route selection model.
Innovation Solution
A traffic flow simulator that records and compares route selections under different setting conditions, allowing users to determine the applicability of the route selection model across varying conditions, and adjusts the simulation accuracy based on adherence rates and cost calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If route selection results are not recorded across different setting conditions, then the device complexity is reduced, but the ability to verify route selection model effectiveness deteriorates
Solution Approach 1:
The patent applies preliminary action by recording route selection results in advance under multiple different setting conditions (work modes) before actual traffic flow simulation. The route selection unit stores these pre-recorded routes in a storage unit, enabling later comparison and verification of route selection model effectiveness without adding complexity to the core simulation process.
2Reliability
If route selection results are recorded and compared across different setting conditions, then the route selection model effectiveness verification is improved, but the device complexity increases
Solution Approach 1:
The patent implements universality by designing the route selection unit and storage unit to serve multiple functions: they not only select and store routes for current simulation conditions but also retain and provide access to routes from previous different setting conditions. This multi-functionality enables comprehensive model verification without requiring separate dedicated systems for each task.
Solution Approach 2:
The patent applies copying by storing replicated route selection results from different work modes in the storage unit. Instead of re-running simulations to compare routes, the system creates and maintains copies of route selection data under various setting conditions, allowing efficient comparison and verification of route selection model effectiveness across different scenarios.
3Measurement precision
If simulation accuracy is improved through adherence rate calculations, then the measurement precision is improved, but the calculation complexity increases
Solution Approach 1:
The patent implements feedback by calculating adherence rates that compare actual route selections with predicted routes from the route selection model. This feedback mechanism quantifies simulation accuracy by measuring how closely simulated vehicle routes match model predictions, allowing continuous refinement and verification of the route selection model's effectiveness.
Data Source
AI summary
A traffic flow simulator configured to simulate a traffic flow of a plurality of simulation vehicles generated in a road network. The traffic flow simulator includes: a route selection unit configured to select a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model; and an index calculation unit configured to calculate a traffic evaluation index of the road network by causing each of a plurality of the simulation vehicles to move on the road network in accordance with the route. The route selection unit records, into a storage unit, a first route selected during execution of a first mode below and a second route selected during execution of a second mode below, the first and second mode being a work mode in which the traffic flow is simulated under a first and second setting condition.