A system (102, 200, 500, 600, 700, 800, 900) comprising: conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) configured to be attached to a vehicle system (100, 300, 704) that is configured to travel along a conductive route (108, 604, 706, 804, 904), wherein one or more first conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) are configured to inject plural electrical examination signals into the route (108, 604, 706, 804, 904) from onboard the vehicle system (100, 300, 704) and one or more second conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) are configured to detect plural electrical characteristics of the route (108, 604, 706, 804, 904) based on the electrical examination signals; and one or more processors configured to determine feature vectors representative of different values of the electrical characteristics, the feature vectors including a combination of (a) a mean or median of the electrical characteristics and (b) a deviation of the electrical characteristics one or more of prior to, during, or subsequent to a decrease in the electrical characteristics by more than a designated drop threshold, the one or more processors also configured to compare the feature vectors to one or more patterns of feature vectors associated with different conditions of the route (108, 604, 706, 804, 904), at least one of the patterns of feature vectors is associated with a break in conductivity of the route (108, 604, 706, 804, 904), wherein the one or more processors are configured to detect the break in the conductivity of the route (108, 604, 706, 804, 904) responsive to one or more of the electrical characteristics (1500, 1502, 1900, 2000, 2100, 2200) decreasing by more than the designated drop threshold for a time period within a designated drop time period and responsive to the feature vectors more closely matching the at least one pattern of feature vectors associated with the break in the conductivity of the route (108, 604, 706, 804, 904). conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) configured to be attached to a vehicle system (100, 300, 704) that is configured to travel along a conductive route (108, 604, 706, 804, 904), wherein one or more first conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) are configured to inject plural electrical examination signals into the route (108, 604, 706, 804, 904) from onboard the vehicle system (100, 300, 704) and one or more second conductive bodies (210, 230, 510, 530, 606, 616, 708, 710, 806, 908, 910) are configured to detect plural electrical characteristics of the route (108, 604, 706, 804, 904) based on the electrical examination signals; and one or more processors configured to determine feature vectors representative of different values of the electrical characteristics, the feature vectors including a combination of (a) a mean or median of the electrical characteristics and (b) a deviation of the electrical characteristics one or more of prior to, during, or subsequent to a decrease in the electrical characteristics by more than a designated drop threshold, the one or more processors also configured to compare the feature vectors to one or more patterns of feature vectors associated with different conditions of the route (108, 604, 706, 804, 904), at least one of the patterns of feature vectors is associated with a break in conductivity of the route (108, 604, 706, 804, 904), wherein the one or more processors are configured to detect the break in the conductivity of the route (108, 604, 706, 804, 904) responsive to one or more of the electrical characteristics (1500, 1502, 1900, 2000, 2100, 2200) decreasing by more than the designated drop threshold for a time period within a designated drop time period and responsive to the feature vectors more closely matching the at least one pattern of feature vectors associated with the break in the conductivity of the route (108, 604, 706, 804, 904).