39.4.1. At Grade Intersection Control

Try these first

1. 1.

   What is an at-grade intersection?

   Hint

   Think about the level at which the roads meet.

2. 2.

   Name a benefit of channelized intersections.

   Hint

   Consider how they change traffic flow.

3. 3.

   What is the primary purpose of channelized intersections?

   • To control speed
   • To direct traffic
   • To increase accidents

   Hint

   Think about the physical features that assist vehicles.

4. 4.

   True or False: Signalized intersections can have multiple phases.

   • True
   • False

   Hint

   Consider how busy intersections could operate.

5. 5.

   Design and justify a traffic management plan for a new at-grade intersection you would recommend.

   Hint

   Think about current traffic patterns in the area.

6. 6.

   Evaluate the effectiveness of a roundabout placed at a previously signalized intersection. What metrics would you use?

   Hint

   Focus on safety and efficiency.