Patent ID: 9336684
Filing Date: 2016-05-10
CPC Classification: G01C,G05D,G08G

Claim Text:
1. A travelling vehicle system comprising: a travelling route; a ground controller; and travelling vehicles configured to travel in a section including a curve in the travelling route under control of the ground controller; wherein the travelling vehicles are configured to travel along the travelling route, include an obstacle sensor and a communication unit configured to communicate with the ground controller, and are configured or programmed to make a request for a travel permission to the ground controller via the communication unit before travelling in the section including a curve; the ground controller is configured or programmed to control travelling of the travelling vehicles and includes: the traveling vehicles are configured to enter the section including a curve when the ground controller has provided the first travel permission or the low-order travel permission; the traveling vehicles are configured to wait to enter the section including a curve when the ground controller has not provided the first travel permission or the low-order travel permission; and when a travelling vehicle that is farthest ahead in the section has been provided with the first travel permission by the ground controller and a travelling vehicle following the farthest ahead travelling vehicle in the section has been provided with the low-order travel permission by the ground controller, the travelling vehicle with the low-order travel permission is configured to monitor a travelling vehicle ahead of the travelling vehicle with the low-order travel permission in the section by the obstacle sensor of the travelling vehicle with the low-order permission in the section.