Applications of electronic map from mobile phone have helped drivers finding travel destinations. These applications were often used by driver as guidance when he was driving. There were some factors caused traffic accident that endanger individuals. Among these factors, human error was the main factor that caused traffic accidents. This research aims analyzing the effect of using electronic maps while driving on human error probability. This research used goggle map application as secondary task on driver. Human Error Assessment and Reduction Technique (HEART) were used to analyze human error probability and its output be compared to drivers shelves report. The reports include incident and accident that have been experienced by drivers along driving while using electronic map. The value of human error probability on this condition was 0.0106 and according to driver subjective judgment, the drivers never had experienced on incidents and accidents. However sometime a driver got a warning from another driver because he inhibited the traffics. A procedure driving safely while using electronic map was designed to minimize accident and protest from others driver. This research concluded this driving activity increased human error probability very slight and it will safe if driver allow the procedure.