1. In the following cases where adult pedestrians have been injured while crossing or walking upon railway tracks, recovery has been denied: Currier v. Railroad, 78 N.H. 586; Coyle v. Railroad, 77 N.H. 604; Bonnin v. Railroad, 77 N.H. 559; Doucette v. Railroad, 77 N.H. 419; Connelly v. Railway, 77 N.H. 280; Chabott v. Railway, 77 N.H. 133; Greenwood v. Railroad, 77 N.H. 101; Lord v. Railroad, 74 N.H. 39; Batchelder v. Railroad, 72 N.H. 528; Myers v. Railroad, 72 N.H. 175; Waldron v. Railroad, 71 N.H. 362; Davis v. Railroad, 70 N.H. 519; Gahagan v. Railroad, 70 N.H. 441. Although a pedestrian is not subject to a more stringent rule of law than that which governs other travelers, the fact that he has "nothing to control except his own locomotion" (Bonnin v. Railroad, supra, 562) is a distinguishing circumstance of material importance on the issue of contributory negligence — an issue which the jury must determine unless it conclusively appears that at the time of the accident the injured person was not in the exercise of ordinary care. Collins v. Hustis, 79 N.H. 446.