Bullet trains connecting Tokyo and Osaka resumed full service on Tuesday, after an accident involving railway maintenance vehicles caused an all-day suspension on part of the Tokaido Shinkansen Line a day earlier. JR Central said it planned to run four extra trains on the line before 7 a.m., following the conclusion of post-accident work late Monday. High-speed train service on the line, which takes many tourists to Kyoto, was significantly disrupted Monday after a maintenance vehicle rear-ended another on the eastbound track in Aichi Prefecture, central Japan, according to JR Central. The acc…