39. Traffic Intersections

Try these first

1. 1.

   What is the main function of a traffic intersection?

   Hint

   Think about how vehicles navigate to different destinations.

2. 2.

   What is an uncontrolled intersection?

   Hint

   Consider what happens when traffic light signals are missing.

3. 3.

   What is the total number of conflicts at a typical four-legged intersection?

   • 24
   • 32
   • 16

   Hint

   Think about the combinations of vehicle interactions.

4. 4.

   Traffic signals are an example of what type of control?

   • True
   • False

   Hint

   Does the signal dictate the flow of traffic?

5. 5.

   Design an at-grade intersection to minimize conflicts between three different traffic flows, considering local pedestrian traffic patterns.

   Hint

   What features of traffic control devices can enhance safety here?

6. 6.

   Analyze the trade-offs involved when deciding between building a grade-separated intersection versus a signalized at-grade intersection.

   Hint

   Consider what impacts urban environments might face with each option.