The Pennsylvania Supreme Court has held that systematic, nondiscriminatory, non-arbitrary roadblocks conducted by the police to maintain highway safety by disclosing license, registration, and equipment violations do not offend the Pennsylvania Constitution.
Commonwealth v Blouse, 531 Pa 167, 611 A2d 1177 (1992).
Martin R. Egna,
Constitutional Law - Searches and Seizures - Roadblocks,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol31/iss4/15