Updated on 21/11/2024
Updated at 3:45 p.m., November 21, 2024
New measures are being taken to protect the national road network.
► North of the Western Defense and Security Zone (department 76 – Seine-Maritime)
- activation of storage zones on the A28 and 89 in the north-south direction
- traffic ban for heavy goods vehicles over 7.5 t from 6 p.m. on the entire national road network (RRN) of Seine-Maritime (76)
► In Normandy
- opening of the storage area on the RN13 towards Cherbourg
- storage at the Cherbourg maritime station for heavy goods vehicles coming from ferries
► Ille-et-Vilaine
- lifting of the storage area of the Fougères bar. However, the ban on circulation in both directions of heavy goods vehicles over 7.5 t is maintained: diversion from the south to go towards the East of France, on the A81 > A11 axis and bypass via the Ile-de-France and the east of Ile-de-France to go towards the north of the West zone
Consult the zonal decree
Updated at 2:30 p.m., November 21, 2024
► In the departments of the Western defense and security zone
This morning, 17 of the 20 departments in the Western defense and security zone were concerned by vigilance: snow and ice for 11 of them and winds for 6 of them.
- orange snow-ice vigilance for the departments: Calvados (14), Eure (27), Eure et Loir (28) Loir-et-Cher (41), Loiret (45), Manche (50), Mayenne (53), Orne (61), Sarthe (72), Seine-Maritime (76)
- extension of yellow snow ice vigilance for other departments
- orange vigilance violent winds for the departments: Finistère (29), Indre (36), Maine et Loire (49), Morbihan (56), Loire-Atlantique (44), Vendée (85)
- return to yellow vigilance for three departments Finistère (29), Ille-et-Vilaine (35) and Côte d’Armor (22)
Given the traffic difficulties, 6 heavy goods vehicle storage areas were activated this morning in order to maintain smooth traffic for road users. A few accidents have been reported with minor incidence and without significant bodily consequences.
Weather situation
The Caetano depression is currently crossing the area from west to east and generating snowfall on an axis going from North Brittany / Normandy to the Grand-Est. The exact trajectory of the Caetano depression, circulating from Brittany towards northern Italy, fluctuated slightly, causing a slight readjustment of the departments concerned by the orange vigilance for the “Snow/ice” parameters in the northern part of the depression and “Wind” in the southern part of the depression.
Applicable measures
In order to ensure the safety of users on the roads, the prefect of the Western defense and security zone has taken, by order, new traffic restriction measures for vehicles weighing more than 7.5 tonnes. authorized load (PTAC) assigned to the transport of goods.
The main developments are as follows:
- To take into account the strong winds in departments 29, 56, 44 and 85, the speed is lowered and an overtaking ban is imposed.
- Department 76 having moved to orange “snow” alert, the speed reduction and overtaking ban measures are now applied to it. Additional measures may be taken in the afternoon in light of changing weather conditions.
However, traffic bans and the storage of heavy goods vehicles have been lifted in the Breton departments in view of the improvement in the situation in these departments.
The prefect of the Western defense zone recommends that populations avoid travel when possible, adopt prudent driving and respect the instructions and traffic restrictions issued by the authorities in the departments concerned by the vigilance. Respect the measures taken for your safety and follow the instructions indicated on the variable message signs.
Consult the zonal decree
Updated at 1 p.m., November 21, 2024
► In Ille-et-Vilaine
According to the 1 p.m. bulletin from Météo-France, the department of Ille-et-Vilaine is now placed on yellow alert for snow, ice and wind.
Updated at 12:30 p.m., November 21, 2024
► In the departments of the Western defense and security zone
The West Zone bad weather plan (PIZO) has been activated since yesterday evening. A zonal operational center has been activated in level 2 posture since 5:00 a.m. this morning in order to monitor the evolution of the depression as well as traffic conditions in real time.
Given the traffic difficulties, 6 heavy goods vehicle storage areas were activated this morning in order to maintain smooth traffic for road users.
Updated at 10 p.m., November 20, 2024
During the night of Wednesday 20 to Thursday 21 November 2024, the departments on orange snow-ice alert should have temperatures around 0 degrees. The expected quantities of snow are of the order of 5 to 10 cm of damp to wet snow on the Breton reliefs. Elsewhere, the expected quantities are of the order of 1 to 5 cm elsewhere.
► In the departments of the Western defense and security zone
The West Zone Bad Weather Plan (PIZO) was activated in the departments concerned by Amaury de SAINT-QUENTIN, prefect of Brittany, prefect of the West defense and security zone, prefect of Ille-et-Vilaine.
From 6 a.m., Thursday November 21, 2024, in the following departments: Calvados (14), Côtes-d'Armor (22), Ille-et-Vilaine (35), Manche (50), Mayenne (53), Morbihan ( 56), Orne (61), Sarthe (72), vehicles and combinations of vehicles whose total authorized weight (PTAC) is greater than 7.5 tonnes:
- are not authorized to carry out overtaking maneuvers,
- their maximum authorized speed is lowered by 20 km/h on all axes of the national road network (national roads and motorways).
These same restrictions will be applied from 11 a.m., Thursday November 21, for the departments Cher (18), Eure (27), Eure-et-Loire (28), Loir-et-Cher (41) and Loiret (45).
As of 6 a.m., Thursday, November 21, 2024, sections of the national road network are subject to traffic bans and storage obligations for vehicles and combinations of vehicles whose total authorized weight (GVW) is greater than 7.5 tonnes, on the following axes: N12, N164, N176, A84, N174, A11, N154, A28 (locations and storage areas specified in the zonal decree)
These traffic restriction measures are not applicable to:
- emergency vehicles and equipment,
- intervention vehicles and equipment (road managers' operating equipment, transport of snow salt and road melting agents, electricity and gas network managers' equipment).
The speed of vehicles authorized to circulate is limited to 70 km/h without prejudice to more restrictive speed limits.
► In Ille-et-Vilaine
With regard specifically to Ille-et-Vilaine, the prefect has taken, by decree, two measures applicable in the department by extending the zonal road traffic restrictions to the Bretillian secondary network as of this Thursday, November 21 at 6 a.m.
- maximum speed limit of 20km/h
- overtaking ban
These measures are in force on all roads in the Ille-et-Vilaine department (national roads, motorways and secondary network).
The prefect of the Brittany region, prefect of the Western defense and security zone, prefect of Ille-et-Vilaine, calls on the entire population to exercise the greatest caution on the roads and invites people to limit traffic as much as possible. travel.
These limitations and bans will be lifted when traffic conditions return to normal.
Consult the prefectural decrees
Updated at 4 p.m., November 20, 2024
In view of Météo-France forecasts, tomorrow, Thursday November 21, 2024, the department of Ille-et-Vilaine will be placed on yellow vigilance from 4 a.m. then on orange vigilance from 6 a.m. for risk of snow-ice.
Weather situation
This Thursday, November 21, Météo-France is forecasting a snowy episode on an axis going from North Brittany, Normandy to the Grand-Est. North of this depression, snowfall down to the plains is expected between late night from Wednesday to Thursday and the evening of Thursday.
► In Ille-et-Vilaine, 2 to 5 centimeters are expected with locally higher accumulations in certain sectors.
Expected development
The uncertainty linked to the positioning of the snow axis could lead to changes in the situation. For the moment, the department is on orange alert from 6:00 a.m. tomorrow morning until the night of Thursday to Friday. An extension is possible Friday morning with a risk of refreezing.
Precautionary advice
- Follow the evolution of the weather situation on the Météo-France and VigiMétéo websites
- Find out about traffic conditions and road conditions on the Bison Futé website
- Limit your non-essential travel as much as possible
- Reduce your speed and increase safety distances
- Follow the cautionary advice disseminated in particular on variable message signs
- Ensure the safety of agents working on the tracks
- Respect the traffic restrictions and diversions put in place
- Facilitate the passage of snow removal equipment
The prefect of Ille-et-Vilaine calls on the entire population to exercise the greatest caution on the roads and invites people to limit travel as much as possible, particularly in the evening and at night.
For perfect information
► Useful links
> Météo-France’s meteorological vigilance website
> The article Take the right actions depending on the weather situation: Snow and ice on the Ille-et-Vilaine prefecture website
> The Bison Futé website
► Useful documents
> The press release of November 20, 2024 | Weather alert: The department of Ille-et-Vilaine is placed on orange snow-ice alert as of this
Thursday November 21, 2024
> The press release of November 20, 2024 | Weather alert: The prefecture takes traffic restriction measures
> The press release of November 21, 2024 | Snowy episode in the departments of the Western Defense and Security Zone
