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TPCB Professional Traffic Operations Engineer Practice Sample Questions:

1. What type of intersection crashes are most likely to be reduced if two-way STOP control is replaced with a traffic control signal?

A) Fixed object collisions
B) Lane-change collisions
C) Right-angle collisions
D) Rear-end collisions

2. What does traffic demand represent?

A) The maximum capacity of a roadway
B) The number of vehicles actually served by a facility
C) The average speed of vehicles on a facility
D) The number of vehicles desiring to pass a point during a time period

3. On a freeway with a density of traffic flow of 60 vehicles per mile and a space mean speed of 40 mph, what is the average headway?

A) 1.5 seconds per vehicle
B) 1.2 seconds per vehicle
C) 1.8 seconds per vehicle
D) 2.1 seconds per vehicle

4. A "short term stationary" temporary traffic control zone occupies a location for:

A) More than 1 hour within a single daylight period
B) Less than 1 hour
C) Less than 10 hours, day or night
D) More than 1 day and up to 3 days

5. For a signalized intersection, the ITE procedure recommends a yellow change interval based on a perception- reaction time of 1 second and a deceleration rate of 10 ft/s². For a 45 mph approach with a 60-foot intersection width, what is the minimum yellow change interval?

A) 4.6 seconds
B) 5.0 seconds
C) 3.8 seconds
D) 4.2 seconds

Solutions: