Opinion by
Mr. Justice Cohen,In 1951 a collision between two automobiles resulted in the death of E. R. Yowell and the injury óf his. wife, Viola, who were in one of the vehicles. Ronald Koch was driving the other automobile which was owned by Edward Dreistadt. Mrs. Yowell and Clarence Waters, the administrator of the estate of her husband, brought actions for personal injuries and wrongful death against Koch, the driver, and Dreistadt, the owner. Dreistadt filed an answer denying that Koch had permission to drive his automobile and was discontinued as a party defendant. The actions resulted in verdicts for the plaintiffs against Koch alone on which judgments were entered. In order to satisfy the judgments plaintiffs brought this present suit against the New Amsterdam Casualty Company on its. policy of *250insurance issued to Dreistadt insuring “the named insured and also . . . any person while using the automobile . . . provided the actual use of the automobile is by the named insured or with his permission.” (Emphasis supplied).
At the trial in the court below the plaintiffs introduced evidence to show that Dreistadt was the owner of the automobile, Koch the driver of the vehicle at the time of the accident, and that judgments against Koch were obtained in the earlier suit. The plaintiffs then rested. The defendant moved for a compulsory nonsuit contending that the plaintiffs failed to establish that “the actual use of the automobile was by the named insured or with his permission.” The motion was denied by the trial judge who determined that a presumption of permissive use of the automobile arose from proof of Dreistadt’s ownership of the vehicle. The defendant then introduced testimony to prove that Koch did not have permission to drive the automobile, but that he had only temporary custody of the vehicle in order to wax and polish it. At the close of the evidence the trial judge refused defendant’s request for binding instructions and charged the jury that the plaintiffs were entitled to a presumption that Koch was operating the automobile at the time of the accident with the permission of the owner until and unless the defendant overcame this presumption by a preponderance of the evidence. The issue of whether defendant’s evidence was sufficient to rebut this presumption was left with the jury. The jury returned verdicts in favor of the plaintiffs and, after defendant’s motions for judgment n.o.v. and a new trial were refused by the court en lane, these appeals were taken.
A presumption is a judicial declaration that the establishment of one fact (The Basic Fact) requires the assumption of the existence of a second fact (The *251Presumed Fact). One of the principal reasons for the creation of presumptions has been stated by Morgan and Maguire as follows: “. . . [Some] presumptions owe their origin and persistence to the judicial conviction that the party who has peculiar means of access to the evidence, or peculiar knowledge as to the existence or non-existence of the presumed fact should bear at least the burden of producing relevant evidence thereof sufficient to justify a finding in his favor. . . ,”1
For this reason we early established in Pennsylvania the rule that proof of the ownership of a business vehicle involved in an accident, even though the owner’s name does not appear thereon, raises a presumption that the operation of the automobile was for the owner’s business purposes.2 Whether at the time and place of an accident a commercial vehicle was actually being used for the owner’s purposes or not, is usually peculiarly within the owner’s knowledge, and consequently the burden of producing credible evidence upon the issue is properly put upon him. Sieber v. Russ Bros. Ice Cream Co., 276 Pa. 340, 344, 120 Atl. 272 (1923); Lanteigne v. Smith, 365 Pa. 132, 139, 74 A. 2d 116 (1950) (dissenting opinion). Since the pre*252sumption is no more than a procedural technique designed for trial convenience to facilitate the production of proof by requiring the party with easier means of access thereto to come forward with evidence, its consequence may be stated as follows: If the defendant fails to introduce credible evidence negating agency, then the issue is decided in favor of the plaintiff as a matter of legal ruling. If the defendant does offer credible evidence to the contrary the presumption disappears as a rule of law and has no further effect upon the outcome of the case. See Watkins v. Prudential Insurance Co., 315 Pa. 497, 507-508, 512, 173 Atl. 644 (1934) ; MacDonald v. Pennsylvania R. R. Co., 348 Pa. 558, 566-567, 36 A. 2d 492 (1944) ; Commonwealth v. Wucherer, 351 Pa. 305, 311, 41 A. 2d 574 (1945); Henes v. McGovern, 317 Pa. 302, 310-311, 176 Atl. 503 (1935) : Geho’s Estate, 340 Pa. 412, 415-416, 17 A. 2d 342 (1941) ; District of Columbia’s Appeal, 343 Pa. 65, 75-76, 21 A. 2d 883 (1941); 9 Wigmore, Evidence §2487, §2491 at 289 (3rd ed. 1940) ; 20 Am. Jur., Evidence §166 (1939) (cases collected).
In the present case, for the same reasons which justified the creation of the “commercial ownership-agency” presumption, the lower court was correct in holding that ownership of a non-commercial automobile raised a presumption that the use of the vehicle was with the permission of the owner.3 The effect of this *253“non-commercial ownership-consent” presumption is the same as that of the “commercial ownership-agency” presumption — to require the defendant to come forward with credible evidence.
The burden of persuasion on the issue of the permission of the driver of the automobile remains with the plaintiff. Cf. Walters v. Western & Southern Life Ins. Co., 318 Pa. 382, 388-390, 178 Atl. 499 (1935) ; Waldron v. Metropolitan Life Ins. Co., 347 Pa. 257, 259-60, 31 A. 2d 902 (1943). Therefore, when the defendant assumes his burden of going forward with the evidence on the issue of permission and presents evidence clearly indicating that no permission was granted so that a jury could not reasonably find otherwise, then if the plaintiff fails to produce evidence that permission had been granted, the court should direct a verdict for the defendant.4
In the trial of the case defendant attempted to meet his obligation by adducing testimony that Koch did not have permission to use the Dreistadt automobile. Plaintiffs on the other hand, sought to shake the credibility of the defendant’s witnesses through cross-examination and to elicit testimony from them that Koch did have permission. The court then properly permitted the case to go to the jury.5 However, the evi*254deuce was submitted to the jury under erroneous and prejudicial instructions, and therefore the verdicts returned in favor of the plaintiffs cannot be permitted to stand.
The trial judge charged the jury that the so-called presumption that one acts rightfully rather than wrongfully6 shifted the burden of persuasion and required the defendant to prove Koch’s lack of permission by the preponderance of the evidence. The “presumption” that one acts rightfully, like the “presumption” of innocence in criminal cases, is actually a judicial determination that the litigant who alleges the illegality, wrongfulness or impropriety of the acts of another party has the burden of producing evidence and persuading the factfinder on the issue.7 Thus, a defend: ant asserting the illegality of the operations of a plaintiff in order to defend against liability must prove his contention by a preponderance of the evidence, Horan v. Weiler & Ellis, 41 Pa. 470 (1862), the same as a plaintiff must do when he seeks to recover for injury caused by the alleged wrongdoing of a defendant, Cincinnati, N. O. & T. P. Ry. v. Rankin, 241 U. S. 319 (1916). But this principle does not require that a party to a lawsuit who alleges the impropriety of the conduct of a non-litigant assume the burden of persuasion on the issue. So, in the present case plaintiff is given the burden of persuading the jury from all the *255evidence that Koch had the consent of Dreistadt to operate the automobile. Laroche v. Farm Bureau Mut. Auto Ins. Co., 335 Pa. 478, 7 A. 2d 361 (1939); Fresh-korn v. Marietta, 345 Pa. 416, 29 A. 2d 15 (1942); Beatty v. Hoff, 382 Pa. 173, 114 A. 2d 173 (1955). The court’s instructions imposing the burden of persuasion on the defendant constituted reversible error.
The judgments are reversed and a venire de novo awarded. Costs to abide the event.
Mr. Justice Bell and Mr. Justice Benjamin R. Jones would enter judgment n.o.v.Edmund M. Morgan and John McArthur Maguire, Cases and Materials on Evidence 78 (3rd ed. 1951). See also Watkins v. Prudential Insurance Co., 315 Pa. 497, 504-505, 173 Atl. 644 (1934).
Kline v. Kachmar, 360 Pa. 396, 401 n.1 61 A. 2d 825 (1948) ; Kunkel v. Vogt, 354 Pa. 279, 281, 47 A. 2d 195 (1946) ; Dugan v. McGara’s Inc., 344 Pa. 460, 462, 25 A. 2d 718 (1942) ; Marach v. Kooistra, 329 Pa. 324, 326-327, 198 Atl. 66 (1938) ; Thatcher v. Pierce, 281 Pa. 16, 18, 125 Atl. 302 (1924) ; Hunter v. Rossi, 172 Pa. Super. 301, 303-304, 93 A. 2d 912 (1953).
The overwhelming majority of jurisdictions also recognize that proof of ownership by the defendant of a vehicle driven by another creates a presumption that the operator was the agent of the owner. See 9 Wigmore §2510(a) (3rd ed. 1940) (cases extensively collected).
This presumption has also been recognized in other jurisdictions which have considered the question. Rabaut v. Venable, 285 Mich. 111, 280 N.W. 129-132 (1938) ; Litalien v. Tuthill, 75 Ida. 335, 272 P. 2d 311 (1954) (dicta) ; Anderson v. Lehner, 243 Iowa 851, 52 N.W. 2nd 513 (1952) (liability based on statute) ; Ermann v. Kahn, 242 N.Y.S. 573, 575 (1930), aff’d, 255 N.Y. 627, 175 N.E. 342 (1931) ; Bryan v. Schatz, 77 N.D. 9, 39 N.W. 2nd 435 (1949) (liability under family purpose doctrine) ; White v. Keller, 188 Ore. 378, 215 P. 2d 986 (1950) (liability based on agency). Many juris*253dietions have by statute imposed liability upon the owner of an automobile for the negligence of one driving the vehicle with the owner’s consent. We recognize no such liability in Pennsylvania.
See the discussion of the problem in Levin, Pennsylvania and the Uniform Rules of Evidence: Presumptions and Dead Man Statutes, 103 U. of Pa. L. Rev. 1, 10-20 (1954).
The court may not direct a verdict for the defendant in such a case because the jury must have the opportunity to resolve the conflicts in the testimony of defendant’s witnesses. If the court is satisfied that a verdict in favor of the plaintiff represents a capricious disregard of the evidence, it may set aside the verdict and *254grant a new trial. MacDonald v. Pennsylvania R. R. Co., 348 Pa. 558, 566-567, 36 A. 2d 492 (1944).
See Cherry v. Mitosky, Adm’r., 353 Pa. 401, 408, 45 A. 2d 33 (1946).
The use of the term “presumption” in such cases is misleading. What is meant is that there are certain issues as to which this Court has determined for various reasons of policy that the burden of persuasion shall be borne by a party other than the one who normally would be expected to have this obligation.