| value | description |
|---|---|
| accident | |
| congestion | |
| earlierAccident | |
| earlierEvent | |
| earlierIncident | |
| equipmentFailure | |
| excessiveHeat | |
| frost | |
| holidayTraffic | |
| infrastructureFailure | |
| largeNumbersOfVisitors | |
| obstruction | |
| pollutionAlert | |
| poorWeather | |
| problemsAtBorderPost | |
| problemsAtCustomPost | |
| problemsOnLocalRoads | |
| radioactiveLeakAlert | |
| roadsideEvent | |
| rubberNecking | |
| securityIncident | |
| shearWeightOfTraffic | |
| technicalProblems | |
| terrorism | |
| toxicCloudAlert | |
| vandalism | |
| other |