Traveling expenses on business of town, city or county

Any person traveling on business of any locality except as hereinafter provided, wherein no part of the cost is borne by the Commonwealth may be reimbursed by such locality on a basis established by the governing body of such locality; however, the rate of reimbursement per mile for private transportation shall not exceed the standard rate deductible as a business expense pursuant to the Internal Revenue Code and regulations promulgated thereunder.