Electrified 'eHighway' demonstration running in California
The system is expected to lower fossil fuel consumption
Siemens and the South Coast Air Quality Management District (SCAQMD) are conducting a one-mile, zero-emission eHighway demonstration in Carson, California, near the ports of Los Angeles and Long Beach.
Three big-rig trucks hauling freight are running along the stretch of highway that uses Siemens technology to electrify select highway lanes via an overhead catenary system. This catenary system supplies the trucks with electric power, similar to how modern-day trolleys or streetcars are powered on many city streets, and the system also allows for truck operation outside of the electrified sections of infrastructure.
Heavy-duty trucks are the number one source of smog-forming emissions in Southern California. Developing a zero- or near-zero goods movement system in the ports will reduce smog-forming, toxic and greenhouse gas emissions in communities around the ports, which are some of the most heavily impacted by air pollution.
“This project will help us evaluate the feasibility of a zero-emission cargo movement system using overhead catenary wires,” said Wayne Nastri, SCAQMD’s executive officer. “This demonstration could lead to the deployment of eHighway systems that will reduce pollution and benefit public health for residents living near the ports.”
One battery-electric truck, a clean natural-gas hybrid-electric truck and a diesel- hybrid truck are now driving on a one-mile catenary system on the north- and south- bound lanes of South Alameda Street from East Lomita Boulevard to the Dominguez Channel in Carson.
The system is expected to lower fossil fuel consumption, reduce truck operating costs, substantially reduce smog-forming, toxic and CO2 emissions, and help accommodate the growing reliance on freight transportation. The aim of this specific project is to demonstrate the eHighway system applied in truck operation on public roads in an urban U.S. setting and to further prepare applications for larger scale initiatives in the future.
The demonstration system, similar to trolley systems or streetcars, features an overhead contact line that makes power available to trucks along the road and an active pantograph located on top of the eHighway trucks that transfers energy from the overhead lines to the truck’s electric motors, allowing the truck to operate with zero emissions while on the catenary system.
The pantograph can connect and disconnect automatically with the contact line via a sensor system while the trucks are moving. This allows the eHighway trucks to easily switch lanes or pass other vehicles without being permanently fixed to the overhead systems like a streetcar. To further ensure the same flexibility as conventional trucks, the eHighway vehicles use an electric-hybrid drive system, which can be powered either by diesel, compressed natural gas (CNG), battery or other on-board energy source, when driving outside of the catenary lines.
Under a separate contract with SCAQMD, the air pollution control agency for Orange County and major portions of Los Angeles, San Bernardino and Riverside counties, the natural-gas hybrid and battery-electric trucks have been developed by Escondido-based TransPower and the diesel hybrid was developed by Mack Trucks, a part of the Volvo Group.
The $13.5 million project is funded by $2.5 million from SCAQMD, as well as $4 million from a settlement with China Shipping, $3 million from the California Energy Commission, $2 million from the Port of Long Beach and $2 million from LA Metro. In addition, Siemens provided a $1.3 million in-kind contribution. SCAQMD is providing an additional $2.1 million and the US EPA is providing $500K for the TransPower contract.