block
While BLOCKED, why: ZONE (another vehicle holds it), CLOSURE (a closure holds or is draining it), DIRECTION_LOCK (a two-way link is in use the other way) or SPUR_RESERVATION (another vehicle has reserved the spur).
While BLOCKED, why: ZONE (another vehicle holds it), CLOSURE (a closure holds or is draining it), DIRECTION_LOCK (a two-way link is in use the other way) or SPUR_RESERVATION (another vehicle has reserved the spur).