(c) Authorities operating a State-aided program of more than 1,000 units may be authorized an additional $100 for each key administrative position upon approval by the division of a request by the authority listing each position they so consider.

(d) Authorities which operate both Federal- and State-aided projects will prorate such travel charges on the basis of current ratios but the total charged to the State program during the fiscal year cannot exceed the budget allowance and, if applicable, the limits listed in this section.

(e) Authorities are responsible that total annual travel expenditures are within the approved budget allowance and, if applicable, within the above limits. Approval of individual expense vouchers or of specific travel requests by the division does not relieve the authority of this responsibility. No travel will be performed nor travel requests submitted for approval by the division if the estimated cost of such travel will place the total annual travel expenditures above the budgetary or cited limits. Authorities, however, may submit a request for a budget revision and, under special circumstances, for an exception to the stated limits. Such requests must be submitted and approval obtained prior to the travel.