Travel case law

Here are controlling and high-value cases that describe rights, immunities, or obligations touching people, travel, and privately-owned cars.

Hendrick v. Maryland, 235 U.S. 610 (1915) — States may regulate motor vehicles on public roads for public safety. 

Bell v. Burson, 402 U.S. 535 (1971) — Driver’s-license and registration suspensions implicate property and liberty interests; due-process protections required before deprivation. 

Reitz v. Mealey, 314 U.S. 33 (1941) — Court upheld suspension of a driver’s license under state police power while recognizing limited procedural protections. 

Delaware v. Prouse, 440 U.S. 648 (1979) — Police stops of vehicles must meet Fourth Amendment standards; random stops to check licenses are limited. 

Saenz v. Roe, 526 U.S. 489 (1999) — Right to travel includes equal treatment for new state residents under the Fourteenth Amendment’s Privileges or Immunities Clause. 

Related foundational travel cases (context): Kent v. Dulles, 357 U.S. 116 (1958) and Shapiro v. Thompson, 394 U.S. 618 (1969) (establish travel as a constitutional liberty distinct from regulated activities). 

Short synthesis you can use:

Travel (interstate/international) is a protected constitutional liberty.  Operating a privately owned car on public roads is a regulated activity subject to licensing, registration, traffic safety rules, and reasonable police authority.  Procedural and Fourth Amendment limits constrain how governments enforce licensing and stops.