Traffic Counter Tester II User’s Manual
2-4
Operating Modes
The TCTII can simulate two channel volume data in one direction (A,B),
two channel volume data in two directions (A to B, B to A), class data and
speed data. To choose the mode you would like to simulate, press the TAB
key until the desired mode is shown at the top left of the display then press
the DO key.
A,B
This mode simulates a Class 2 vehicle with 9 ft. wheelbase. For speeds of
35 MPH and above, 1 vehicle will be simulated every second. For speeds
below 35 MPH, the time between vehicles will increase to allow the counter
to recognize the new vehicle. Vehicles travel in the direction of A to B.
A to B, B to A
This mode simulates a Class 2 vehicle with 9 ft. wheelbase. For speeds of
35 MPH and above, 1 vehicle will be simulated every second. For speeds
below 35 MPH, the time between vehicles will increase to allow the coun-
ter to recognize the new vehicle. Vehicles alternate directions. The vehicle
count will increment after every second vehicle, to show the total for each
direction.
Note:
The tube spacing for this mode is fixed to 4.5 inches.
Classify
This mode simulates a variety of classes of vehicles traveling at the selected
speed. Vehicles will be simulated at a rate of 1 vehicle every 6 seconds, or 10
vehicles per minute. The default scheme simulates all 13 Federal Highway
Administration scheme F classes, with classes 2 and 3 repeated for a total
of 15 vehicles. Refer to the Appendix for more information on the FHWA
class scheme. Vehicles travel in the direction of A to B.
The classification scheme to be simulated can be modified by using the
WinTCTII software to upload a new scheme into the unit. When an uploaded
Class table is being used by the TCTII, the display on the unit will add the
letter ‘u’ next to the class number that is shown during the test. Refer to
chapter 4 for more information on the WinTCTII software.
Speeds
This mode simulates a class 2 vehicle with 9 ft. wheelbase traveling at speeds
from 35 to 80 MPH, in 5 MPH increments. Vehicles will be simulated at the
rate of one vehicle every six seconds, with each vehicle increasing speed
by 5 MPH. Vehicles travel in the direction of A to B.
