The only question here presented is the propriety of the ruling of the trial .court in denying defendant’s motion for judgment of nonsuit. The motion was based upon the ground that contributory negligence on the part of the plaintiff was manifest from his own testimony, and that no other reasonable inference could be drawn therefrom than *494that bis negligence was a proximate contributing cause of his injury. The determination of this question necessitates examination of plaintiff’s testimony, giving him the benefit of every reasonable inference in bis favor to be drawn therefrom.
The plaintiff testified that on the evening of 19 October, 1947, about 6:40 p.m., he was driving his automobile in an easterly direction on highway 17, at a speed of 50 miles an hour. The road was straight and practically level. Plaintiff’s automobile was in good condition and his driving lights in working order. Several miles east of Shallotte he noticed in front of him on his side of the road an unlighted object, 100 to 125 feet distant. This was outlined by the lights of an automobile approaching from the opposite direction, and the object proved to be defendant’s bus. Plaintiff applied his brakes and skidded 37 steps, but was unable to stop before striking the rear of the bus. He said he had almost stopped, and that if he had had 5 more feet he could have avoided it. The only lights burning on the bus were two rear clearance lights, one on each side of the top'. Plaintiff was not blinded by the lights of the oncoming automobile. He said with the bus in front and lights approaching on another ear his lights would not shine down the road farther than 100 to 125 feet, the distance at which hé first observed an object on the road. He testified: “When I first saw the bus outlined in the headlights of the oncoming car I did not know what it was. All I could tell was that there was something directly in front of me rather large. I detected no lights on the rear of this object. I continued on until just about the time it would take to recognize something in front of me and put on brakes. As soon as I found something in front of me, I began to stop — that proved to be too late to avoid the collision.”
This case presents another instance of the difficulty of determining the line between cases where opposing inferences raise questions for the jury and those where the contributory negligence of the plaintiff appears from his own testimony so clearly that no other conclusion can reasonably be drawn therefrom. Bus Co. v. Products Co., 229 N.C. 352, 49 S.E. 2d 623. As Chief Justice Stacy observed in Tyson v. Ford, 228 N.C. 778, 28 S.E. 2d 771, “the line of demarcation may be difficult to plot.” The general principles of law involved seem well settled, but their application to particular facts is not always easy. However, a careful consideration ■of the plaintiff’s testimony as set out in the record leaves us with the impression that only the inference of negligence on his part can reason•ably be deduced therefrom. Driving in the darkness at 50 miles an hour, he could see only 100 to 125 feet in the direction in which he was moving. With yisibility thus limited in relation to his speed, as soon as he discovered the bus in front of him he endeavored to stop but was unable to d-o'So before striking it. He testified if the bus had been five feet farther *495away be could have stopped in time to Have escaped injury. As be expressed it, “As soon as I found something in front of me, I began to stop — that proved to be too late to avoid the collision.”
No other conclusion seems permissible but that plaintiff was driving his automobile at such speed that he was unable to stop within the radius of his lights, and that the collision and resultant injury proximately flowed therefrom. Cox v. Lee, ante, 155, 52 S.E. 2d 355; Bus Co. v. Products Co., 229 N.C. 352, 49 S.E. 2d 623; Riggs v. Oil Co., 228 N.C. 174, 47 S.E. 2d 254; Tyson v. Ford, 228 N.C. 778, 47 S.E. 2d 451; Sibbitt v. Transit Co., 220 N.C. 702, 18 S.E. 2d 203; Beck v. Hooks, 218 N.C. 105, 10 S.E. 2d 608; Stallings v. Transport Co., 210 N.C. 201, 185 S.E. 643; Weston v. R. R., 194 N.C. 210, 139 S.E. 237. “One who operates a motor vehicle during the nighttime must take notice of the existing darkness which limits visibility to the distance his headlights throw their rays, and he must operate his motor vehicle in such manner and at such speed as will enable him to stop within the radius of his lights.” Cox v. Lee, ante, 155, 52 S.E. 2d 355; Barlow v. Bus Lines, 229 N.C. 382, 49 S.E. 2d 793; Dawson v. Transportation Co., ante, 36, 51 S.E. 2d 921; Thomas v. Motor Lines, ante, 122, 52 S.E. 2d 377.
We think the negligence of the plaintiff on his own testimony in the respect pointed out, combining and concurring with defendant’s negligence, was a proximate contributing cause of his injury, barring recovery therefor, and that the defendant was entitled to have its motion for non-suit allowed. For this reason the judgment below must be