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Seatbelt use is required by law , and is enforced ; failure to use your seatbelt can result in a fine . After the other inmate was returned to the facility , they should have been classified as separation cases and strict procedures should have been enforce to keep them from ever being in each other 's presence , let alone housed in the same unit . " The buffer zone rule currently is enforced unless the government finds that dumping waste within the 100-foot protective zone wo n't adversely affect the water quality or quantity . The rule is enforced on London , but because London is specified as Src , the rule is enforced only in the outbound direction ( that is , it applies only to packets leaving London which also originate on London ) .