31.3. Space mean speed (v_s)

Try these first

1. 1.

   What is space mean speed?

   Hint

   Think about how vehicle speeds are averaged differently based on time and position.

2. 2.

   How does space mean speed differ from time mean speed?

   Hint

   Consider the role of vehicle density in the calculations.

3. 3.

   What does space mean speed account for?

   • Time taken by vehicles
   • Spacial weighting of speeds
   • Both a and b

   Hint

   Remember the differences in how time and space influence speed calculations.

4. 4.

   Is space mean speed usually higher, lower or equal compared to time mean speed?

   • True
   • False

   Hint

   Think about how slower vehicles impact the equations.

5. 5.

   Given the following speeds: 70, 50, 30, 90, compute the space mean speed and discuss how slow speeds influence the overall result.

   Hint

   Recall how harmonic averages work.

6. 6.

   Analyze a hypothetical street with vehicles of speeds ranging from 15 to 60 km/h. How would the spacing affect the space mean speed? Create calculations for varied densities.

   Hint

   Relate density to space mean speed computations.