Appellant was convicted of giving a false name to a police officer and he appeals. 1. Appellant contends the trial court erred by denying his motion for a new trial based on the general grounds. However, there is no transcript of trial and in the absence of a transcript, we cannot consider an enumeration of error based on the evidence or proceedings at trial. Brown v. State, 223 Ga. 540, 541 (2) ( 156 SE2d 454) (1967); Tauber v. State, 168 Ga. App. 53 (308 SE2d 419) (1983). In regard to the alleged violation of appellant's right against self-incrimination, appellant contends he was not warned of his Miranda rights (Miranda v. Arizona, 384 U. S. 436 (86 SC 1602, 16 LE2d 694)) before he was asked to produce identification. Miranda warnings are not required when a person responds to an officer's initial inquiry at an on-the-scene investigation which has not become accusatory, Collins v. State, 154 Ga. App. 651, 653 (3) ( 269 SE2d 509) (1980), as was the case here. Appellant also argues that there was no proof that the deputy sheriff who stopped him at the airport was a certified law enforcement officer or deputy sheriff. These are issues which should have been raised at trial, and to hold an evidentiary hearing on such issues at a hearing on a motion for a new trial would be, in effect, a retrial of appellant's case. There is nothing to indicate that any evidence on such issues was newly discovered or was not available prior to appellant's trial. Further, as stated in Division 1, in the absence of a transcript enabling us to determine whether objections were made to the testimony of State witnesses on these issues, or what rulings, if any, were made by the trial court, we cannot consider an enumeration of error based on evidence or proceedings at trial. Brown, Tauber, supra. See also Maroney v. State, 173 Ga. App. 434 (327 SE2d 231) (1985). | 
