CFR›Title 23›Chapter III›Part 1340›Subpart B ContainsSections 1340.4–1340.9CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart B—Survey Design Requirements Sections 1340.4 § 1340.4 In general. 1340.5 § 1340.5 Selection of observation sites. 1340.6 § 1340.6 Assignment of observation times. 1340.7 § 1340.7 Observation procedures. 1340.8 § 1340.8 Quality control. 1340.9 § 1340.9 Computation of estimates. Previous Appendix A to Part 1340 Appendix A to Part 1340—State Seat Belt Use Survey Reporting Form Next C Subpart C—Administrative Requirements