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SUMMARY: This document withdraws a rulemaking proposal to rescind Federal Motor Vehicle Safety Standard (FMVSS) No. 219, ''Windshield zone intrusion.'' The agency has determined that there are two ongoing regulatory developments that could influence vehicle designs by putting a premium on the use of lighter or less rigid materials. These two developments are U.S. fuel economy requirements and a global technical regulation aimed at reducing injuries to pedestrians struck by vehicles. As a result, the agency believes that vehicle designs with regard to the hood and windshield are in a state of change and that the implications of these developments should be better understood before deciding whether to rescind FMVSS No. 219.