4.3. Sensitivity analyses on time model results
The purpose of this section is to analyze how the results displayed in Fig. 2 would change if the parameter values listed in Section 4.1 were different. The sensitivity analyses presented here reinforce the key result of Section 4.2: shuttle train service is faster than conventional service at moderate and higher demand levels (i.e. the time model results are relatively stable across a wide range of model parameter assumptions). Fig. 4 shows that the average distance between classification yards significantly impacts the travel time of conventional service; however, shuttle service still outperforms conventional service even if the average distance between classification yards parameter assumption is quite large. Fig. 5 shows a similar result for the classification yard dwell time parameter assumption.