Tutorial Control Delay

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Control Delay Control Delay is the portion of the total delay attributed to traffic signal operation for signalized intersections. Control Delay can be verified following the steps below:.

'''Removing vehicles that entered subject link during warm-up time and did not depart within simulation duration. These instruction are based on using MS Excel.''' 1. The TSD output file for subject link is needed from a simulation run. 2. Remove/Delete vehicles that entered the subject link before expiration of warm-up time. 4. Remove/Delete vehicles that did not depart the subject link within simulation duration. 5. Save cleaned file as TSD_1_0_1_input.csv.
 * Filter Column A (SimTime) with to include only time less than the warm-up time.
 * Identify the vehicle ID in Column B.
 * Clear the filtering for Column A, then filter Column B with these ID and Remove/Delete them.
 * Filter column A with 'simulation duration' + 'warm-up time' (the last time step of simulation).
 * Identify the vehicle ID in Column B.
 * Clear the filtering for Column A, then filter Column B with these ID and Remove/Delete them.

Delay calculation using RStudio 6. Open RStudio and run total_delay.R. 7. Check the results in total delay.csv.
 * This script calculates total delay by following process:
 * Input TSD_1_0_1_input.csv file.
 * Input link length at prompt.
 * Link Travel Time is calculated as = Link Exit Time - Link Entrance Time using time in column A.
 * Vehicle Desired Speed = LinkFreeFlowSpeed* × Driver Type Desired Speed Multiplier*.
 * Vehicle Desired Travel Time = Link Length* / Vehicle Desired Speed.
 * Individual Vehicle Delay = Link Travel Time - Vehicle Desired Travel Time.
 * Total delay = Summation of individual vehicle delay.
 * Output total delay.csv.
 * *These values can be found in SwashSim model. Duration time & warm up time can be found on simulation panel in SwashSim model.
 * Total vehicle: Count the number of ID in column B.
 * Total delay: summation of delay in Column F.(Filter out the negative values)

My Page Note: We verified only the through movement of the links. The Vehicle Desired Speed would be different for both left and right turning vehicles because of the different Link Free Flow Speed on downstream link than upstream link which affect the delay calculation for the vehicles turning left or right.