Insurance companies: regulation of fire insurance rates with exemption for farmers mutuals, German Alliance Ins. Co. v. Lewis, 233 U.S. 389 (1914); different requirements imposed upon reciprocal insurance associations than upon mutual companies, Hoopeston Canning Co. v. Cullen, 318 U.S. 313 (1943); prohibition against life insurance companies or agents engaging in undertaking business, Daniel v. Family Ins. Co., 336 U.S. 220 (1949).
Intoxicating liquors: exception of druggists or manufacturers from regulation. Ohio ex rel. Lloyd v. Dollison, 194 U.S. 445 (1904); Eberle v. Michigan, 232 U.S. 700 (1914).
Lodging houses: requirement that sprinkler systems be installed in buildings of nonfireproof construction is valid as applied to such a building which is safeguarded by a fire alarm system, constant watchman service and other safety arrangements. Queenside Hills Realty Co. v. Saxl, 328 U.S. 80 (1946).
Markets: prohibition against operation of private market within six squares of public market. Natal v. Louisiana, 139 U.S. 621 (1891).
Medicine: a uniform standard of professional attainment and conduct for all physicians, Missouri ex rel. Hurwitz v. North, 271 U.S. 40 (1926); reasonable exemptions from medical registration law, Watson v. Maryland, 218 U.S. 173 (1910); exemption of persons who heal by prayer from regulations applicable to drugless physicians, Crane v. Johnson, 242 U.S. 339 (1917); exclusion of osteopathic physicians from public hospitals, Hayman v. Galveston, 273 U.S. 414 (1927); requirement that persons who treat eyes without use of drugs be licensed as optometrists with exception for persons treating eyes by the use of drugs, who are regulated under a different statute, McNaughton v. Johnson, 242 U.S. 344 (1917); a prohibition against advertising by dentists, not applicable to other professions, Semler v. Oregon State Dental Examiners, 294 U.S. 608 (1935).
Motor vehicles: guest passenger regulation applicable to automobiles but not to other classes of vehicles, Silver v. Silver, 280 U.S. 117 (1929); exemption of vehicles from other States from registration requirement, Storaasli v. Minnesota, 283 U.S. 57 (1931); classification of driverless automobiles for hire as public vehicles, which are required to procure a license and to carry liability insurance, Hodge Drive-It-Yourself Co. v. Cincinnati, 284 U.S. 335 (1932); exemption from limitations on hours of labor for drivers of motor vehicles of carriers of property for hire, of those not principally engaged in transport of property for hire, and carriers operating wholly in metropolitan areas, Welch Co. v. New Hampshire, 306 U.S. 79 (1939); exemption of busses and temporary movements of farm implements and machinery and trucks making short hauls from common carriers from limitations in net load and length of trucks, Sproles v. Binford, 286 U.S. 374 (1932); prohibition against operation of uncertified carriers, Bradley v. Public Utilities Commission, 289 U.S. 92 (1933); exemption from regulations affecting carriers for hire, of persons whose chief business is farming and dairying, but who occasionally haul farm and dairy products for compensation, Hicklin v. Coney, 290 U.S. 169 (1933); exemption of private vehicles, street cars and omnibuses from insurance requirements applicable to taxicabs, Packard v. Banton, 264 U.S. 140 (1924).
Peddlers and solicitors: a State may classify and regulate itinerant vendors and peddlers, Emert v. Missouri, 156 U.S. 296 (1895); may forbid the sale by them of drugs and medicines, Baccus v. Louisiana, 232 U.S. 334 (1914); prohibit drumming or soliciting on trains for business for hotels, medical practitioners, etc., Williams v. Arkansas, 217 U.S. 79 (1910); or solicitation of employment to prosecute or collect claims, McCloskey v. Tobin, 252 U.S. 107 (1920). And a municipality may prohibit canvassers or peddlers from calling at private residences unless requested or invited by the occupant to do so. Breard v. Alexandria, 341 U.S. 622 (1951).
Property destruction: destruction of cedar trees to protect apple orchards from cedar rust. Miller v. Schoene, 276 U.S. 272 (1928).
Railroads: forbid operation on a certain street, Richmond, F. & P.R. Co. v. Richmond, 96 U.S. 521 (1878); require fences and cattle guards and allowed recovery of multiple damages for failure to comply, Missouri P.R. Co. v. Humes, 115 U.S. 512 (1885); Minneapolis & St. L.R. Co. v. Beckwith, 129 U.S. 26 (1889); Minneapolis & St. L.R. Co. v. Emmons, 149 U.S. 364 (1893); charge them with entire expense of altering a grade crossing, New York & N.E.R. Co. v. Bristol, 151 U.S. 556 (1894); makes them responsible for fire communicated by their engines, St. Louis & S.F.R. Co. v. Mathews, 165 U.S. 1 (1897); requires cutting of certain weeds, Missouri, K. & T.R. Co. v. May, 194 U.S. 267 (1904); create a presumption against a railroad failing to give prescribed warning signals, Atlantic Coast Line R. Co. v. Ford, 287 U.S. 502 (1933); require use of locomotive headlights of a specified form and power, Atlantic Coast Line R. Co. v. Georgia, 234 U.S. 280 (1914); make railroads liable for damage caused by operation of their locomotives, unless they make it appear that their agents exercised all ordinary and reasonable care and diligence, Seaboard Air Line R. Co. v. Watson, 287 U.S. 86 (1932); require sprinkling of streets between tracks to lay the dust, Pacific Gas & Electric Co. v. Police Court, 251 U.S. 22 (1919).
Sales in bulk: requirement of notice of bulk sale applicable only to retail dealers. Lemieux v. Young, 211 U.S. 489 (1909).