Optimization Of Depreciation Subsidy Policy Strategies For Electric Bikes Incorporating Traffic Safety

To improve the traffic safety of electric bicycles(e-bikes),China has promulgated e-bikes standardization policies which requires local governments to guide illegal e-bikes out of use.To facilitate the effective implementation of the policy,the local governments have implemented a depreciation subsidy scheme.When designing the subsidy scheme,effectively improving the e-bikes’ traffic safety at the road network level while saving government expenses is essential for the sustainable implementation of the policy.This study proposes an optimization method for designing depreciation subsidy policy strategies incorporating traffic safety evaluation.Based on the policy scheme that the subsidy amount is proportional to the remaining service life of e-bikes,this thesis formulates a risk assessment model for the e-bikes traffic network to characterize the effect of the subsidy on improving safety.In this thesis,the ratio of the subsidy amount to the remaining service life is defined as the subsidy amount coefficient.According to whether the subsidy amount coefficient corresponding to different remaining service life equals,we divide the subsidy scheme into the uniform depreciation subsidy scheme(equal)and stepped depreciation subsidy scheme(inequal).Then,we establish a dualobjective optimization model with the goal of minimizing the risk(maximizing safety improvement)and minimizing government expenditure based on the bi-level structure.The optimal subsidy strategy under different safety-expense trade-offs is analyzed based on the Nguyen and Dupuis network.Also,we compare the expenditure of uniform depreciation subsidy schemes and stepped depreciation subsidy schemes.The results show that specific subsidy schemes effectively improve road safety without enormous government spending.When the market price or service life of e-bikes increases,the government spending on the same safety goal increases.Suppose the policymakers aim to maximize the safety improvement.In that case,the enlarged multiple in expense is equal to the enlarged multiple in market price and equal to the square of the enlarged multiple in e-bike’s service life.Overall,a stepped depreciation subsidy scheme is more cost-saving.Under the goal of maximizing safety,implementing a stepped depreciation subsidy scheme saves as 4/27 as of implementing a uniform depreciation subsidy scheme.However,some strategies under the stepped depreciation subsidy scheme will create redundancy.There are 39 figures,11 tables,and 119 references.