Recovery strategy:
Despite the improved greedy routing strategy, the
risk remains that a packet gets stuck in a local
optimum
(the forwarding vehicle might be the closest
to the next junction). Hence, a recovery strategy is
required. The repair strategy of GyTAR is based on the
idea of "carry and forward": the forwarding vehicle of
the packet in a recovery mode will carry the packet
until the next junction or until another vehicle, closer
to the destination junction, enters/reaches its
transmission range.