23 CFR 1340.12 - Re-selection of observation sites.
(a) Re-selection of observation sites. States shall re-select observation sites using updated sampling frame data, as described in § 1340.5(a), no less than once every five years.
(b) Re-selection submission deadline. States shall submit updated sampling frame data meeting the requirements of § 1340.5(a) for NHTSA approval no later than March 1 of the re-selection year.