Impact rules
A warning is not yet a travel disruption: the reading is our contribution, and it comes from impact rules, reviewed by a person. Each entry uses the most specific rule for its topic, subtype and level. "Alert" marks the rules that trigger an immediate email to subscribers in the interested area.
"Danger" gives the values on the danger table, A (worst) to E (mildest), in the order: spread · volatility · severity · cost. A "~" means the spread is measured from where each entry is placed; a "–" means the criterion does not apply to that risk. How the grades work is in the editorial standard.
| Topic | Subtype | Level | Statement | Danger | Alert |
|---|---|---|---|---|---|
| Protests and public order | any | — | A demonstration is announced. Streets around the route are usually closed and buses, trams and taxis diverted while it lasts; if tension rises, police can close a wider area at short notice. Keep away from the route and allow extra time to reach stations and airports. | D·C·D·D | |
| Protests and public order | football | — | High-risk football match: heavy police presence, streets around the stadium and the fans' routes closed, stations near the stadium crowded before and after the match, and clashes between fans are possible. Keep away from the stadium area and the fans' routes. | D·B·C·D | |
| Seasonal dangers | wildfire | — | Wildfire danger period: fires can start and spread quickly and may close roads, rail lines or campsites at short notice. Follow local instructions and avoid open flames outdoors. | ~·C·C·D | |
| Strikes | Aereo | — | Flights may be cancelled or delayed during the strike; flights protected by the guaranteed time bands should still operate. Check with your airline. | ~·D·E·C | ✓ |
| Strikes | Circolazione e sicurezza stradale | — | Staff who run or secure roads or motorways (for example patrol, fire-safety, toll or maintenance crews) are striking. Essential safety services are guaranteed and traffic is normally not stopped, but some road services may be reduced or slower, and queues are possible on the stretch concerned. Check traffic information before setting off. | ~·D·E·E | |
| Strikes | Energia | — | Energy-sector strike: essential services are guaranteed by law, but local disruption to fuel supply or utility services cannot be ruled out. | ~·D·D·D | |
| Strikes | Ferroviario | — | Regional and long-distance trains may be reduced outside the guaranteed bands (typically 06:00-09:00 and 18:00-21:00). Check with the operator. | ~·D·E·D | ✓ |
| Strikes | Generale | — | General strike across sectors: several kinds of transport (local transit, rail, possibly air and sea) may be disrupted. Check each operator. | ~·C·D·C | ✓ |
| Strikes | Marittimo | — | Ferry and other maritime services may be cancelled or reduced. | ~·D·E·C | ✓ |
| Strikes | Plurisettoriale | — | Multi-sector strike: some transport services may be affected. Check the operators you plan to use. | ~·D·E·D | |
| Strikes | Sanità | — | Health-sector strike: emergency care is guaranteed, but scheduled appointments, tests and non-urgent services may be cancelled. | ~·D·D·E | |
| Strikes | Trasporto pubblico locale | — | Local buses, trams and metro may be reduced or suspended outside the guaranteed time bands. | ~·D·E·E | |
| Volcanic ash | ash | Orange | Volcanic ash notice for aviation (orange): flights at the nearest airports may be delayed or rerouted, and parts of the airspace or the airport can close at short notice. Check with the airline before leaving for the airport. | ~·A·C·C | |
| Volcanic ash | ash | Red | Volcanic ash notice for aviation (red): an ash cloud is affecting the airspace; flights at the nearest airports are likely to be cancelled or diverted and the airport may close. Check with the airline before travelling. | ~·A·B·B | |
| Weather | avalanche | — | Avalanche danger is high or very high: mountain roads and passes, ski runs and lifts may close and some villages can be cut off at short notice. Keep to open, secured routes and check road and lift status before setting off. | ~·B·A·B | |
| Weather | heat | Orange | Heat-wave level 2: conditions are a risk for vulnerable people. Plan outdoor activity for the cooler hours and carry water. | ~·D·C·E | |
| Weather | heat | Red | Heat-wave level 3, several consecutive days of high risk: a health risk for everyone. Avoid exertion outdoors between 11:00 and 18:00 and carry water; trains, buses and parked cars can get very hot. | ~·D·B·D | |
| Weather | high_tide | — | High water expected in Venice: low-lying areas such as St Mark's Square flood around the peak, raised walkways go up and some water-bus stops and routes change. Allow extra time and carry waterproof boots. | ~·C·D·D | |
| Weather | hydrogeological | Orange | Localised road and rail disruption is likely; underpasses and coastal or riverside roads may be at risk; some school or public-office closures are possible. | ~·B·B·C | ✓ |
| Weather | hydrogeological | Red | Widespread road and rail closures, evacuations and airport ground disruption are possible; avoid non-essential travel in the zone. | ~·A·A·B | ✓ |
| Weather | rain | Orange | Heavy rain is likely to cause localised road and rail disruption; underpasses and low-lying roads may flood. | ~·C·C·D | |
| Weather | rain | Red | Very heavy rain may cause widespread road and rail closures and airport disruption; avoid non-essential travel in the area. | ~·B·B·C | ✓ |
| Weather | thunderstorm | Orange | Severe thunderstorms may flood underpasses and local roads and delay road, rail and air travel. | ~·B·C·D | |
| Weather | thunderstorm | Red | Very severe thunderstorms may cause widespread road, rail and air disruption; avoid non-essential travel in the area. | ~·A·B·C | ✓ |
| Weather | wind | Orange | Damaging gusts may lead to restrictions for high-sided vehicles, ferry cancellations and flight delays; fallen trees may block roads and rail lines. | ~·C·C·D | ✓ |
| Weather | wind | Red | Very dangerous winds may close roads, bridges and ports and disrupt airports; avoid non-essential travel in the area. | ~·B·B·C | ✓ |
Corridors: where a rule calls for it, the text adds the motorways, main railway lines, ports and airports that the alert zone crosses (at most three per kind, the longest within the zone). Motorways, railways and ports come from © OpenStreetMap contributors (ODbL licence); airports from OurAirports. They help you orient yourself.