Examples of technical aspects used as proxies in infrastructure decision making
| Reference | Technical criteria | Decision made | An improvement would be to quantify additionally … |
|---|---|---|---|
| Calle-Cordon et al. (2017) | Reliability, availability, maintainability and safety | Interventions to be executed on switches and crossings | Costs to users of lost service |
| Patra (2009) | Reliability, availability, maintainability and safety | Interventions to be executed on railway infrastructure | Costs to users of lost service |
| Zio et al. (2007) | Reliability of objects, delays due to speed restrictions caused by deteriorated conditions and interventions | Interventions to be executed on tracks | Risks related to delays |
| Jaedicke et al. (2013) | Probability of being hit by a landslide | Rank of objects for intervention | Costs of being hit |
| Liu et al. (2014) | Probability of collision between cars and trains at level crossings | Rank of level crossings for intervention | Costs of travel delays in case of collisions at level crossings |
| Jafarian and Rezvani (2012) | Probability of derailment, the condition of objects | Rank of objects for intervention | Costs of possible accidents and traffic interruptions |
| Peterson and Church (2008) | Consequences on network operation in terms of traffic flow | Rank of bridges and tunnels for intervention | Costs of losing network operation |
| Kurauchi et al. (2009) | Consequences on network operation in terms of traffic flow | Rank of links for intervention | Risks related to network operation |
| Fecarotti et al. (2015) | Probability and duration of loss of network operation | Rank of railway tracks, switches and stations for intervention | Risks related to network operation |
| Chang and Nojima (2001) | Consequences on network operation in terms of traffic flow | Estimate infrastructure disruption and restoration costs after earthquakes | Risks related to network operation after earthquakes |
| Sun and Gu (2011) | Roughness, deflection, surface deterioration, rutting, skid resistance | Road interventions to execute | Costs of reductions in service due to increased roughness |
| Reference | Technical criteria | Decision made | An improvement would be to quantify additionally … |
|---|---|---|---|
| Reliability, availability, maintainability and safety | Interventions to be executed on switches and crossings | Costs to users of lost service | |
| Reliability, availability, maintainability and safety | Interventions to be executed on railway infrastructure | Costs to users of lost service | |
| Reliability of objects, delays due to speed restrictions caused by deteriorated conditions and interventions | Interventions to be executed on tracks | Risks related to delays | |
| Probability of being hit by a landslide | Rank of objects for intervention | Costs of being hit | |
| Probability of collision between cars and trains at level crossings | Rank of level crossings for intervention | Costs of travel delays in case of collisions at level crossings | |
| Probability of derailment, the condition of objects | Rank of objects for intervention | Costs of possible accidents and traffic interruptions | |
| Consequences on network operation in terms of traffic flow | Rank of bridges and tunnels for intervention | Costs of losing network operation | |
| Consequences on network operation in terms of traffic flow | Rank of links for intervention | Risks related to network operation | |
| Probability and duration of loss of network operation | Rank of railway tracks, switches and stations for intervention | Risks related to network operation | |
| Consequences on network operation in terms of traffic flow | Estimate infrastructure disruption and restoration costs after earthquakes | Risks related to network operation after earthquakes | |
| Roughness, deflection, surface deterioration, rutting, skid resistance | Road interventions to execute | Costs of reductions in service due to increased roughness |
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