4. Factors affecting transportation

Try these first

1. 1.

   What is the 85th percentile value in transportation design?

   Hint

   Think about how we ensure safety for most road users.

2. 2.

   Name one factor that can influence human reaction time.

   Hint

   Consider what can affect a person's alertness.

3. 3.

   What does the term '85th percentile value' indicate?

   • It measures the average speed of drivers.
   • It represents a characteristic that 85% of the population can meet or exceed.
   • It is a design standard for all vehicles.

   Hint

   Think about what percentage of people can accomplish specific tasks.

4. 4.

   True or False: Proper road lighting is only important during the day.

   • True
   • False

   Hint

   Consider night driving challenges.

5. 5.

   Design a small urban intersection considering various vehicle sizes and pedestrian traffic. What factors must you consider?

   Hint

   Think about how cars, trucks, and pedestrians interact at this intersection.

6. 6.

   Evaluate a road segment known for accidents during nighttime. Which design factors might you consider to improve safety?

   Hint

   What additional elements can enhance visibility and prevent accidents?