manual mode
8.If the process controller was in automatic scroll mode at the time of the changeover to "manual", it is preferable to select the "RUN/STOP "functin in order to stop the time base and set the reference value, since in the event of an automatic restart it is easier to advance the program than reverse it if it has gone too far during the manual procedure.
9.Integrating with the task of highway capacity study,how to progr am automobiles action for dual-lane two-way highway capacity imita tion is introduced.According to the enactment of status of vehicle running and connection,model of vehicle following mode is confirmed.By the enactment of vehi cle travelling crane space,passenger car equivalents coefficient is simulated by the emluator to provide parameters for Chinese highway capacity manual.

