ITE International
Canada
TrafficWiki Volume Adjust Factors
Traffic Signal Terms
Delay
100

This is the official monthly magazine of ITE.

What is the ITE Journal?

100

This factor indicates consistency of 15 minute flow rates during peak hour.

What is Peak Hour Factor?

100

This type of delay is the sum of control, geometric, indistinct, and traffic delay.

What is total delay?

200

This is what ITE used to stand for.

What was the Institute of Traffic Engineers?
200

This factor is the highest directional volume divided by the total volume.

What is the D factor?

200

This comes right after a green signal.

What is a yellow interval?

300

This board establishes policies for the operations of ITE.

What is the international board of direction?

300

This factor can be calculated by dividing the Design Hourly Volume by the Annual Average Daily Traffic.

What is the K factor?

300

This type of delay occurrs when geometric features cause users to reduce their speed.

What is geometric delay?

400

This person was the first international president of ITE.

Who is Ernest P. Goodrich?

400

This is the shape of major freeway route signs in British Columbia.

What is the royal crown of the Queen of England?

400

The estimate the Design Hourly Volume, the ___th highest hourly volume during the year is used.

What is the 30th?

400

When the traffic volume increases, this function will give the estimated increase in delay.

What is the volume-delay function (VDF)?

500

In 2025, there were three people added to the list of ITE honorary members. This is one of them.

Who is Rock Miller, Peter Yauch, or Jeffery Paniati?

500

Similar to warrants, Canada uses this amount of justifications for traffic signals.

What is 7?

500

This metric is determined by counting volume over a few days and applying a seasonal adjustment factor.

What is AADT (Annual Average Daily Traffic)?

500

This type of delay is faced by a vehicle due to intersection signal control, and is the sum of approach delay and intersection delay.

What is control delay?