Novel traffic lane rail maintenance car

The utility model relates to the technical field of travelling crane maintenance, and discloses a novel traffic lane rail maintenance car which comprises a fixing plate, a travelling crane mechanism is arranged at the bottom of the fixing plate, a buffer mechanism is arranged on the upper surface of the fixing plate, and a safety seat is arranged above the buffer mechanism. According to the novel carriageway rail maintenance car, through cooperation of sliding grooves, sliding blocks, fixing columns, mounting plates and buffer springs, inertia force generated when the maintenance car stops can be buffered, the situation that a safety belt excessively extrudes the thoracic cavity of a worker is avoided, meanwhile, through a movable plate and an electric push rod, the fixing columns cannot shake in the running process, and the safety of the worker is improved. The safety seat can be fixed and limited through cooperation of a fixing cylinder, a reset spring, a limiting rod, a handle and a limiting groove, so tha