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• Une surface partagée par 2 ou plusieurs routes
• Changement de direction
• Simples ou complexes
– 3 branches, 4 branches, et > 4 branches
• 3 catégories:
– Dénivelé sans échanges
– Dénivelé avec échanges
• Diffuseur: une des voies devient Autoroute ou voie express
• Échangeur: toutes les branches sont des autoroutes ou voies express
– A niveau:
• Sans feux
• A feux
Les Carrefours
1
2
3
4
5
6
Types de conflits
• 4 types:
– Conflit parallèle
– Conflit divergent
– Conflit convergent
– Conflit sécant
7
Conflits divergents
8
Conflits convergent
9
Paramètres de conception des
carrefours
• Visibilité et perception:
– Assurer la visibilité nécessaire a la perception du carrefour et
a la perception réciproques des usagers
– Rendre orthogonales les branches des carrefours plans
• Simplicité:
– Concevoir des aménagements simples, facilement
identifiables, dont le fonctionnement est bien compris
– Préférer la compacité à la complexité
• Cohérence:
– Rechercher une géométrie cohérente avec le comportement
que l’on attend de l’usager
10
Visibilité
11
Visibilité
12
Visibilité
13
14
Configurations conseillées
15
Configurations déconseillées
16
Branches orthogonales
17
Carrefours en baïonnette
18
Principaux éléments
19
Carrefour giratoire
20
Alignement des approches
21
Paramètres de construction
22
Types de carrefours dénivelés
23
Types de
carrefours
dénivelés
24
25
26
27

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09 carrefours