tariff configurations for example corporate and fleet accounts credit card based accounts and accounts using electronic funds transfer from a bank account customer related data provided by customer relationship management crm 55 may be utilized to for invoicing 54 customers 58 direct debit and credit card transactions may be sent to clearing houses 57 and unpaid accounts handed over to collection agencies 56 in some embodiments transactions for identifiable vehicles are charged directly but external transactions associated with users of another toll operator 39 s electronic tags or unidentifiable vehicles can be managed through an interoperability enabling transaction clearing platform fig5 shows an exemplary transaction clearing platform according to some embodiments of the present invention in some embodiments the transaction clearing platform enables migration to improved wireless communication protocols and or systems for example a 5 9 ghz dsrc system while providing backward compatibility with existing and legacy toll systems as shown by arrows 61 transaction information is captured and transmitted to the toll agency if a record of the transaction data or information about the tag owner exists in the database the transaction is processed 62 if a record of the transaction data does not exist in the database the.