A safety system for a walkway of a locomotive. The safety system includes an operator cabin adjacent to a front end of the locomotive, and a walkway extending from the operator cabin along a first side of the locomotive to facilitate a locomotive operator performing regular maintenance. More particularly, the safety system includes a resistive grid exhaust in a sidewall of the first side of the locomotive for directing hot air along a path from a resistive grid within the sidewall to external the locomotive during a self-load mode of the locomotive. A barrier bar is positioned adjacent to the base of the resistive grid exhaust, and is extendable to an extended position over the walkway during the self-load mode to prevent the operator from walking into the path of the hot air from the resistive grid exhaust. Upon the barrier bar retracting from the extended position over the walkway, the locomotive switches out of the self-mode into a normal mode to shut off the supply of the hot air from the resistive grid through the resistive grid exhaust to permit the operator to safely walk in front of the resistive grid exhaust.