Thermo King announces the launch of the new SB+ line of temperature control units for trailers. The new line, the latest step in the evolution of the benchmark-setting SB series, includes the SB-110+, SB-210+ and the SB-310+, all for trailers, and the SB-310R+ for rail applications. This line of new units was developed to help offset the growing challenges faced by those in the trucking industry: higher fuel costs, higher operating costs and increased driver turnover.