Patent ID: 7864031

Claim:
A retainer arrangement for a school bus having a hinged arm, a motor operatively connected to the hinged arm for pivoting the hinged arm between a stored position adjacent the school bus and a deployed position extending outwardly of the school bus, and a motor control module for controlling the motor, the retainer arrangement being attached to the school bus for retaining the hinged arm in the stored position positively and comprising a second control module that is operatively connected to the motor control module, the retainer arrangement having a retainer motor and a lock member that is moved by the retainer motor between a lock position retaining the hinged arm in the stored position and a release position allowing the hinged arm to be pivoted outwardly by the motor, wherein the second control module includes a first time delay after movement of the lock member to the release position and before pivoting of the arm from the stored position to the deployed position and a second time delay after pivoting of the arm from the deployed position to the stored position and before movement of the lock member to the lock position.