The Secretary concerned shall promulgate regulations specifying the extent to which holders of rights-of-way under this subchapter shall be liable to the United States for damage or injury incurred by the United States caused by the use and occupancy of the rights-of-way. The regulations shall also specify the extent to which such holders shall indemnify or hold harmless the United States for liabilities, damages, or claims caused by their use and occupancy of the rights-of-way.

Any regulation or stipulation imposing liability without fault shall include a maximum limitation on damages commensurate with the foreseeable risks or hazards presented. Any liability for damage or injury in excess of this amount shall be determined by ordinary rules of negligence.