Other tools that support legislative oversight, as reported by NCSL-AASHTO survey respondents, include legislative requests for information from the DOT, as well as use of other independent sources of transportation related data. Legislative research staff, universities, diverse interest groups, NCSL and legislative fiscal offices can provide meaningful information that may help the legislature oversee the DOT and transportation system performance. The Ohio Legislative Service Commission, for example, continuously monitors DOT revenues and expenditures and reports on significant developments in a monthly newsletter to legislators and legislative staff; this gives the legislature another window into the DOT's financial activities.