A Japanese high court upheld Monday a sentence of 18 years in prison for a man convicted of a 2017 road rage incident that killed a couple and injured their two children and caused an outcry that led to tougher punishment of dangerous driving. The Tokyo High Court rejected the appeal of Kazuho Ishibashi, 32, who was convicted of dangerous driving at a lower court for forcing the car of Yoshihisa Hagiyama, 45, and his family to stop on the passing lane of the Tomei Expressway in Kanagawa Prefecture, near Tokyo, on June 5, 2017, where it was rear-ended by a truck. Extensive news coverage of the …