DRIVE3 – Yellow Signal Response

Overview: Computes the probability of stopping and Driver Response Time for given inputs

Entry into Module:

This module of the program is normally entered by clicking on the REC-TEC block in the upper left of the REC-TEC Window causing the drop-down menu to appear. Place the cursor on the DRIVE3 block then Traffic Signal Response and click on Yellow Signal Response on the sub-menu to initiate this module.

Under certain circumstances, the user may choose to use the Files block instead of the drop-down menu approach. Selecting any file with an .YSR extension in the Dialog box accessed from either the Open Single File or Open Multiple Files block opens this module.

Selecting AutoLoad [ON] from either the Setup Menu or the AutoLoad Icon on the upper right side (third line) of the REC-TEC Window automatically loads the scenario that was on the screen when the module was closed, either individually, or when the program was closed. With AutoLoad [OFF] on the main REC-TEC Window, modules will start without loading a file.

Data Entry:

This module contains the following data entry blocks within the leftmost frame:

1 Primary Vehicle

· Initial Speed – Range: 36 f/s – 100 f/s)

· Grade – Tangent of Angle – Range: +/- .12

· Distance to Stop Line (Y) – When traffic signal changes to yellow – Range: 100’ – 400’

· Width (Longitudinal) – Stop line to far edge of intersection – Range: 18’ – 80’

· Adjustments – (+250 for Air Brakes | ~ - 400 for foot over brake)

· Sight Line _ The furthest distance a driver can see the traffic signal from eye height

Output:

The output from this module consists of the Driver Response Time, the standard range precision and the Probability of Stopping. Additional data shown include the average deceleration.

Options:

Several Command Buttons appear in a frame located at the lower right corner of the module Window. The Command Buttons allow the user to engage options including the option to Open and Save the data required to generate the scenario shown on the screen at the time the file was saved.

· Open .YSR File – Calls up a Dialog box, which Opens any pre-existing .YSR file and displays the output results.

· Save .YSR File – Calls up a Dialog box, which Saves data on the screen to files with any user-selectable filenames. This is independent of the automatic saving as “LastFile.YSR” of the data at the close of this module or the close of the program.

· Help/Resources – Calls up the AccidentDynamics.com (Jeffrey Muttart) website.

· Studies – Calls up various studies in this area.

· N – This button toggles a graphical number pad on the screen that can be used to enter data into the input boxes without using your keyboard number pad. This may be useful for presentations as data entry can be accomplished using a wired/wireless mouse.