What is the role of this amendment act in regulating preventive detention laws?
The role of the Constitution (Forty-fourth Amendment) Act, 1978 in regulating preventive detention laws is to place limitations on the power to detain individuals without trial. This amendment act substitutes Clause (4) of Article 22 with new provisions that:

1. Limit the duration of preventive detention without an advisory board's review to two months.
2. Require an advisory board, constituted according to the Chief Justice's recommendations, to assess whether there is sufficient cause for continued detention before the end of the two-month period.
3. Mandate that the advisory board consist of a serving High Court judge and at least two other judges (either current or retired).
4. Specify that nothing in the clause shall allow the detention of any person beyond the maximum period prescribed by any law made by Parliament under sub-clause (a) of clause (7).
5. Provide explanations for the definition of "appropriate High Court" based on the authority making the order of detention.