¶1Laurie Jackson appeals the trial court’s grant of summary judgment in favor of Costello Milligan, arguing the court erred in finding the statute of limitations had expired. We affirm.
¶2BACKGROUND
¶3On April 1, 1994, as Jackson stood by the open door of a vehicle parked beside a gas pump at a service station, another *554vehicle struck the car and then drove off. The impact caused the car door to hit Jackson and, as a result, she suffered head and facial injuries. Jackson did not know who was driving the other car.
¶4On March 17, 1997, Jackson filed her initial action against the unknown driver pursuant to the statutory scheme established by state law.
¶5Almost four and a half years after the accident, on September 15, 1998, Jackson was allowed by the court to amend her complaint to add Milligan as a defendant. The attorney representing John Doe agreed to the amendment. The amended complaint retained John Doe as a named party and identified him as an unknown driver, but then added Milligan in the. caption as an additional defendant. The complaint also alleged that “the Defendant, John Doe, may have been identified and, upon information and belief, his name is COSTELLO MILLIGAN.” Milligan answered the amended complaint, offering a general denial but specifically denying the paragraph that alleged John Doe had been identified as Costello Milligan. Milligan also asserted certain affirmative defenses, contending the action was barred by the applicable statute of limitations and, also, that the relation back provisions of Rule 15(c) of the South Carolina Rules of Civil Procedure did not apply in this circumstance.
¶6Milligan then moved for summary judgment on the grounds of the affirmative defenses asserted in his answer. The trial court ruled in favor of Milligan, concluding that the relation back provision of Rule 15(c) did not apply and that the statute of limitations had expired.
¶7STANDARD OF REVIEW
¶8“Summary judgment is appropriate when it is clear that there is no genuine issue of material fact and that the *555moving party is entitled to a judgment as a matter of law.” Cafe Assocs., Ltd. v. Gerngross, 305 S.C. 6, 9, 406 S.E.2d 162, 164 (1991). “Our standard of review in evaluating a motion for summary judgment is to liberally construe the record in favor of the nonmoving party and give the nonmoving party the benefit of all favorable inferences that might reasonably be drawn therefrom.” Estes v. Roper Temp. Servs., Inc., 304 S.C. 120, 121, 403 S.E.2d 157, 158 (Ct.App.1991). Moreover, summary judgment is a drastic remedy which “ ‘should be cautiously invoked so that no person will be improperly deprived of a trial of the disputed factual issues.’ ” Baughman v. American Tel. & Tel. Co., 306 S.C. 101, 112, 410 S.E.2d 537, 543 (1991) (quoting Watson v. Southern Ry. Co., 420 F.Supp. 483, 486 (D.S.C.1975)).
¶9DISCUSSION
¶10Jackson argues the trial court erred in granting summary judgment to Milligan. She contends that serving John Doe was the equivalent of serving Milligan and the service of process on John Doe tolled the applicable statute of limitations as to Milligan. We disagree.
¶11South Carolina Code Ann. § 38-77-180 permits an injured party to file suit against an unknown owner or driver of a vehicle providing the injured party a means to collect uninsured motorist’s coverage. That same section specifically allows the institution of an action against the real tortfeasor if his identity thereafter becomes known.
¶12The Supreme Court of Virginia recently ruled on a similar case. In Rivera v. Witt, 257 Va. 280, 512 S.E.2d 558 (1999), the Virginia court distinguished its earlier decision of Truman v. Spivey, 225 Va. 274, 302 S.E.2d 517 (1983). In the Trumancase, the court determined that its John Doe statute treated both a John Doe defendant and a later identified uninsured defendant as one entity. In Rivera, the only distinction was that the later identified tortfeasor who was originally sued as John Doe was an insured motorist. The Riveracourt concluded, “there is nothing in the uninsured motorist statute which suggests that, under the facts of this case, Doe and Witt should be treated as the same entity; therefore, the statute of limitations applies to each of them individually.” Id. at 560.
¶13We turn now to the allied question of whether Jackson’s amendment related back to her original complaint. Milligan argued, and the circuit court agreed, that the relation back provision of Rule 15(c) of the South Carolina Rules of Civil Procedure did not save Jackson’s cause of action against Milligan.
¶14Rule 15(c) provides:
Whenever the claim or defense asserted in the amended pleading arose out of the conduct, transaction or occurrence set forth or attempted to be set forth in the original pleadings,, the amendment relates back to the date of the original pleading.
An amendment changing the party against whom a claim is asserted relates back if the foregoing provision is satisfied and, within the period provided by law for commencing the action against him the party to be brought in by amendment (1) has received such notice of the institution of the action that he will not be prejudiced in maintaining his defense on the merits, and (2) knew or should have known that, but for a mistake concerning the identity of the proper party, the action would have been brought against him.
¶15Rule 15(c), SCRCP.
¶16There have been few South Carolina decisions discussing Rule 15(c), and none dispositive of the case before us. In Hughes v. Water World Water Slide, Inc., 314 S.C. 211, 442 S.E.2d 584 (1994), our supreme court considered whether an amendment that corrected the name of the corporate defendant related back to the filing of the original complaint. The Hughescourt, quoting Schiavone v. Fortune, 477 U.S. 21, 29, 106 S.Ct. 2379, 91 L.Ed.2d 18 (1986), adopted a four-part test *558to aid in interpreting the requirements of Rule 15(c). Thus, Rule 15(c) requires:
(1) the basic claim must have arisen out of the conduct set forth in the original pleading; (2) the party to be brought in must have received such notice that it will not be prejudiced in maintaining its defense; (3) that party must or should have known that, but for a mistake concerning identity, the action would have been brought against it; and (4) the second and third requirements must have been fulfilled within the prescribed limitations period.
¶17Hughes, 314 S.C. at 214, 442 S.E.2d at 586. In Hughes, the court ruled, under the particular facts and circumstances of that case, an amendment correcting a mistake in the defendant’s corporate name related back to the initial commencement of the action. Id. at 215, 442 S.E.2d at 586.
¶18Here, Jackson did not simply correct the defendant’s name or substitute one defendant for another. Rather, she added Milligan as a defendant because he may have been the driver. The language of Rule 15(c) clearly speaks to a change in party, not the addition of a defendant to an already existing defendant. In our view, the addition of a party is not the same as a substitution or change of party. See Kraly v. Vannewkirk, 69 Ohio St.3d 627, 635 N.E.2d 323 (1994) (determining that Ohio’s Rule 15(c), which is similar to our Rule 15(c), allows for relation back when a party is substituted but not when a party is added while retaining a party named in the original suit). But see Harding v. Godwin, 238 Ga.App. 432, 518 S.E.2d 910 (1999) (noting the Georgia relationship back statute, which contains essentially the same language as our Rule 15(c), authorizes the addition of a new party under certain circumstances if the requirements of the statute are strictly met), cert. denied (Oct. 22,1999). Had Jackson substituted
¶19For the foregoing reasons, the decision of the trial court is
¶20AFFIRMED.
¶21. S.C.Code Ann. §§ 38-77-170 (Conditions to Sue or Recover Under Uninsured Motorist Provision When Owner or Operator of Motor Vehicle Causing Injury or Damage is Unknown) (Supp.1999), -77-180 (“John Doe” Actions Against Unknown Defendant) (1989).
¶22. "However, the bringing of an action against the unknown owner or operator as John Doe or the conclusion of that action does not constitute a bar to the insured, if the identity of the owner or operator who caused the injury or damages complained of becomes known, from bringing an action against the owner or operator previously proceeded against as John Doe_” S.C.Code Ann. § 38-77-180 (1989).
¶23. In 1999, Virginia's uninsured motorist’s statute was amended. It now provides in pertinent part:
The bringing of an action against an unknown owner or operator as John Doe shall toll the statute of limitations for purposes of bringing *557an action against the owner or operator who caused the injury or damages until his identity becomes known. In no event shall an action be brought against an owner or operator who caused the injury or damages, previously filed against as John Doe, more than three years from the commencement of the action against the unknown owner or operator as John Doe in a court of competent jurisdiction.
¶24Va.Code Ann. § 38.2.2206(G) (1999).
¶25. For a discussion of cases in which substitutions have been deemed to relate back and also ones in which substitutions have not related back, see Joel E. Smith, Annotation, Relation Back of Amended Pleading Substituting True Name of Defendant for Fictitious Name Used in Earlier Pleading So As To Avoid Bar of Limitations, 85 A.L.R.3d 130 (1978) and Annotation, Change in Party After Statute of Limitations Has Run, 8 A.L.R.2d 6 (1949).
¶26. Although represented by different counsel, the uninsured motorist carrier and Milligan’s carrier are, serendipitously, the same. Because Milligan’s answer denied he was John Doe as a matter of fact, he is judicially estopped from asserting otherwise in the proceeding against John Doe which remains a viable cause of action.