Home › CFR › Title 23 › Part 134023 CFR Part 1340 — Uniform Criteria for State Observational Surveys of Seat Belt UseSubpart A — General§ 1340.1— Purpose.§ 1340.2— Applicability.§ 1340.3— Definitions.Subpart B — Survey Design Requirements§ 1340.4— In general.§ 1340.5— Selection of observation sites.§ 1340.6— Assignment of observation times.§ 1340.7— Observation procedures.§ 1340.8— Quality control.§ 1340.9— Computation of estimates.Subpart C — Administrative Requirements§ 1340.10— Submission and approval of seat belt survey design.§ 1340.11— Post-approval alterations to survey design.§ 1340.12— Re-selection of observation sites.§ 1340.13— Annual reporting requirements.