Total Transportation Services Inc. (TTSI), a Southern California-based provider of logistics services, plans to replace its entire fleet of diesel trucks with natural gas trucks, which will be fueled with renewable natural gas (RNG). The announcement was made in conjunction with the nonprofit Coalition for Clean Air (CCA) to raise awareness of the importance of natural and renewable gas trucking to help improve air quality and reduce greenhouse-gas (GHG) emissions in the Los Angeles region, especially at the ports of Long Beach and Los Angeles. More >>