Samenvatting
This report details various warning levels recommended for use in highway maintenance rating systems. Experience had shown that a revision of the recommended standards of maintenance for use by highway authorities, included in the report of the committee on highway maintenance, was necessary. Although the warning levels are basically those used in the chart system of assessing structural maintenance needs of highways they include some improvements not yet incorporated into that system. The report is issued as the basis for discussion. (Author/publisher)