Shown at left is Jesse Ball from J. J. Keller, and at right is Leland Halcomb, a Mercer driver. J. Keller, the Wisconsin-based leader in transportation safety and regulatory compliance, said Mercer Transportation Co., of Louisville, Ky., has installed its 1,000th J. J. Keller electronic logging device (ELD). Mercer Transportation Co. has one of the [...]