Ligne 21 du réseau de Paris

La ligne ****21**** du réseau de Paris est une ligne de bus sous-traitée par le groupe Accentours à Paris. Elle relie *Porte de Saint-Ouen—Hôpital Bichat* à *Stade Charléty—Porte de Gentilly*.

## Caractéristiques de la ligne

### Chiffres clés

* Longueur de la ligne : 21 km
* Durée aller-retour : 140 min
* Vitesse commerciale : 9 km/h
* Taux de fraude : 12 %

### Tracé

Chargement de la carte...{"type":"TERRAIN","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"mappingservice":"googlemaps3","width":"700px","height":"350px","centre":{"text":"","title":"","link":"","lat":48.85858363817098,"lon":2.3355420666907634,"icon":""},"title":"","label":"","icon":"","lines":[{"text":"","title":"","link":"","strokeColor":"#00D392","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.90021015830952,"lon":2.329825793216158},{"lat":48.89029287933833,"lon":2.3264998540376913},{"lat":48.887682742084436,"lon":2.325705920169283},{"lat":48.88738644762293,"lon":2.325684462497164},{"lat":48.883844887446045,"lon":2.3273152455782187},{"lat":48.883717894574616,"lon":2.327304516742159},{"lat":48.883640287661095,"lon":2.3271757707094443},{"lat":48.88354857024439,"lon":2.327132855365206},{"lat":48.88341452140973,"lon":2.327154313037325},{"lat":48.88332985880271,"lon":2.3271972283815634},{"lat":48.883224030342376,"lon":2.3271972283815634},{"lat":48.875977775871995,"lon":2.3268431767915976},{"lat":48.875632017920694,"lon":2.326703701922823},{"lat":48.875441497212044,"lon":2.3266393289064657},{"lat":48.87403021010942,"lon":2.3269504651521933},{"lat":48.87378323077315,"lon":2.3271006688570273},{"lat":48.87352919361238,"lon":2.3274225339388144},{"lat":48.87111577624818,"lon":2.331799899051119},{"lat":48.87101697890492,"lon":2.3319071874117148},{"lat":48.870332449096715,"lon":2.332196865985323},{"lat":48.8698172813123,"lon":2.3326689347719443},{"lat":48.870388905517736,"lon":2.332647477099825},{"lat":48.87109460540536,"lon":2.3324114427065146},{"lat":48.87123574418849,"lon":2.332400713870455},{"lat":48.87216019337343,"lon":2.33277622313254},{"lat":48.87225898845924,"lon":2.3327333077883017},{"lat":48.87295760528436,"lon":2.3315424069856894},{"lat":48.87304934212266,"lon":2.3315102204775107},{"lat":48.873148135452695,"lon":2.331456576297213},{"lat":48.8732328152946,"lon":2.3312849149202597},{"lat":48.87333160826233,"lon":2.3311883553957236},{"lat":48.874905212803355,"lon":2.331381474444796},{"lat":48.875187468472085,"lon":2.3313707456087363},{"lat":48.87650699259813,"lon":2.3309952363466513},{"lat":48.87733961557977,"lon":2.330598269412447},{"lat":48.879943236997875,"lon":2.329074774691988},{"lat":48.88329458267478,"lon":2.327551279971529},{"lat":48.883372190124746,"lon":2.327551279971529},{"lat":48.883449797454304,"lon":2.327626381823946},{"lat":48.883534459858275,"lon":2.3276692971681845},{"lat":48.88365439801859,"lon":2.327658568332125},{"lat":48.8837320049102,"lon":2.3275190934633505},{"lat":48.88375317040521,"lon":2.327411805102755},{"lat":48.88385194259674,"lon":2.327304516742159}]},{"text":"","title":"","link":"","strokeColor":"#00D392","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.86980825956096,"lon":2.332675943863771},{"lat":48.866844176943474,"lon":2.333931217682741},{"lat":48.86470569402804,"lon":2.3348431687478044},{"lat":48.86458571043096,"lon":2.3348217110756853},{"lat":48.86326587187721,"lon":2.333802471650026},{"lat":48.86317411710087,"lon":2.333802471650026},{"lat":48.86145191932015,"lon":2.3392419915322282},{"lat":48.861536618957246,"lon":2.3391668896798112},{"lat":48.86165660986444,"lon":2.339220533860109},{"lat":48.862058930218716,"lon":2.3394351105813005},{"lat":48.86214362882855,"lon":2.339402924073122},{"lat":48.86220715269188,"lon":2.3392419915322282},{"lat":48.86317411710112,"lon":2.335529814255617},{"lat":48.864705694028295,"lon":2.3348431687478044}]},{"text":"","title":"","link":"","strokeColor":"#00D392","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.86145279945822,"lon":2.339241816048041},{"lat":48.86095871539368,"lon":2.3407545819324405},{"lat":48.86088107316867,"lon":2.3407974972766787},{"lat":48.859116444670576,"lon":2.339896275047675},{"lat":48.859045858236634,"lon":2.339917732719794},{"lat":48.858982330360966,"lon":2.3400357499164492},{"lat":48.8584811631815,"lon":2.342739416603461},{"lat":48.85725998834093,"lon":2.3470524086994082},{"lat":48.85717528146674,"lon":2.3470953240436465},{"lat":48.8570905744492,"lon":2.3470524086994082},{"lat":48.85725292944022,"lon":2.347385002617255},{"lat":48.857394107265264,"lon":2.3475459351581485},{"lat":48.85765528519192,"lon":2.347706867699042},{"lat":48.85772587358682,"lon":2.3476961388629825},{"lat":48.857845873629714,"lon":2.347234798912421},{"lat":48.857930579369125,"lon":2.347213341240302},{"lat":48.85865763107054,"lon":2.347406460289374},{"lat":48.85876351150534,"lon":2.3473742737811953},{"lat":48.85884115701519,"lon":2.347234798912421},{"lat":48.8609587153936,"lon":2.3407545819324405}]},{"text":"","title":"","link":"","strokeColor":"#00D392","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.857098084563454,"lon":2.3470492413587385},{"lat":48.8552697901089,"lon":2.3458690693921858},{"lat":48.85377322139838,"lon":2.344334845835667},{"lat":48.85017280208015,"lon":2.342596774394017},{"lat":48.847574691638115,"lon":2.340965991312962},{"lat":48.84742642583499,"lon":2.3407621434278303},{"lat":48.84728521990009,"lon":2.3406548550672346},{"lat":48.84712989291176,"lon":2.3406333973951154},{"lat":48.844023251966206,"lon":2.342189078623753},{"lat":48.84136127221185,"lon":2.3435301831311994},{"lat":48.841184743353146,"lon":2.343744759852391},{"lat":48.840337396170604,"lon":2.3459549000806623},{"lat":48.84023147676483,"lon":2.3460300019330793},{"lat":48.8349917172431,"lon":2.3450000336713606},{"lat":48.83121338345165,"lon":2.344291930491429},{"lat":48.83017517454422,"lon":2.3439056923932844},{"lat":48.828896806133805,"lon":2.3431332161969953},{"lat":48.828812051274184,"lon":2.342897181803685},{"lat":48.82884030290999,"lon":2.341695552165013},{"lat":48.82879086253688,"lon":2.3415989926404768},{"lat":48.82867785578661,"lon":2.341545348460179},{"lat":48.827922116592944,"lon":2.3416097214765363},{"lat":48.826587184935924,"lon":2.341588263804417},{"lat":48.82633997146724,"lon":2.3415346196241194},{"lat":48.82607863018852,"lon":2.3413522294111067},{"lat":48.82468007802181,"lon":2.339925294215184},{"lat":48.82453880795585,"lon":2.339893107707005},{"lat":48.82127535858311,"lon":2.3411054661817365},{"lat":48.82121178278391,"lon":2.341191296870213},{"lat":48.82132480637117,"lon":2.3425538590497785},{"lat":48.82126829460941,"lon":2.342714791590672},{"lat":48.82046299508069,"lon":2.3437984040326887},{"lat":48.81956584791364,"lon":2.3445816090650373},{"lat":48.819516398390256,"lon":2.34451723604868},{"lat":48.81950933416866,"lon":2.3443241169996076},{"lat":48.81967887521249,"lon":2.3429079106397444},{"lat":48.81972126038382,"lon":2.342822079951268},{"lat":48.81987667237214,"lon":2.342864995295506},{"lat":48.82053363590795,"lon":2.342811351115208},{"lat":48.82114820690409,"lon":2.342639689738255},{"lat":48.821600300297476,"lon":2.342392926508885},{"lat":48.82214421975686,"lon":2.3420174172468},{"lat":48.822681069538866,"lon":2.341738467509251},{"lat":48.823641733743926,"lon":2.3414809754438215},{"lat":48.82539348577166,"lon":2.341620450312596},{"lat":48.82631878168476,"lon":2.3417277386731916},{"lat":48.82658718493608,"lon":2.3418242981977277},{"lat":48.828303519106235,"lon":2.3425860455579572},{"lat":48.828896806134075,"lon":2.3431332161969953}]},{"text":"","title":"","link":"","strokeColor":"#FF0000","strokeOpacity":"1","strokeWeight":"2","pos":[]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":11,"layers":[],"controls":["pan"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[]}
### Arrêts

* **Porte de Saint-Ouen—Hôpital Bichat**, *correspondance* **BB** *341*
* Porte de Saint-Ouen, *correspondance M13 T3b* **BB** *341*
* Navier
* Guy Môquet, *correspondance M13* **31** **BB**
* Davy, *correspondance* **BB**
* La Fourche, *correspondance M13* **54** **74**
* Ganneron, *correspondance* **54** **74**
* Place de Clichy, *correspondance M2 M13* **30** **54** **68** **74** **80** **95**
* Liège, *correspondance M13* **68** **95**
* Gare Saint-Lazare—Budapest *(direction Stade Charléty)*, *correspondance Transilien J et L, RER E, M3 M12 M13 M14* **20** **22** **26** **27** **28** **29** **32** **43** **66** **80** **94** **95** **528**
* Trinité *(direction Pte de Saint-Ouen)*, *correspondance M12* **26** **43** **68**
* Gare Saint-Lazare—Havre *(direction Stade Charléty)*, *correspondance RER E* **20** **27** **29** **32** **43** **94** **95**
* Havre—Haussmann *(direction Stade Charléty)*, *correspondance* **20** **27** **29** **32** **66** **95**
* Haussmann—Mogador *(direction Pte de Saint-Ouen)*, *correspondance* **68**
* Auber *(direction Stade Charléty)*, *correspondance RER A, M3 M9* **20** **27** **29** **32** **66** **95**
* Opéra, *correspondance M3 M7 M8* **20** **27** **29** **32** **45** **52** **66** **68** **95**  **RoissyBus**
* Opéra—Quatre Septembre, *correspondance* **20** **27** **29** **68** **95**
* Petits Champs—Danielle Casanova *(direction Pte de Saint-Ouen)*, *correspondance* **27** **29** **68** **95**
* Pyramides, *correspondance M7 M14* **27** **68** **95**
* Palais Royal—Comédie Française *(direction Stade Charléty)*, *correspondance* **27** **39** **68** **95**
* Palais Royal—Musée du Louvre *(direction Pte de Saint-Ouen)*, *correspondance M1 M7* **67** **69** **72**
* Saint-Honoré—Valois *(direction Stade Charléty)*
* Louvre—Rivoli, *correspondance M1* **67** **69** **72** **74** **85**
* Rivoli—Pont Neuf *(direction Pte de Saint-Ouen)*, *correspondance* **56** **67** **69** **70** **72** **74** **85**
* Pont Neuf—Quai du Louvre *(direction Stade Charléty)*, *correspondance* **27** **58** **67** **69** **70** **72** **74** **85**
* Châtelet *(direction Stade Charléty)*, *correspondance RER A, B et D, M1 M4 M7 M11 M14* **38** **47** **58** **67** **69** **70** **74** **76** **85**
* Rivoli—Châtelet *(direction Pte de Saint-Ouen)*, *correspondance* **72** **74**
* Cité—Palais de Justice, *correspondance* **38** **47** **58** **96**
* Saint-Michel—Saint-Germain, *correspondance RER B et C, M4* **27** **38** **96**
* Les Écoles, *correspondance M10* **27** **38**
* Luxembourg, *correspondance RER B* **27** **38** **82** **84** **89**
* Saint-Jacques—Gay-Lussac, *correspondance* **24** **27**
* Feuillantines, *correspondance* **24** **27**
* Berthollet—Vauquelin, *correspondance* **24** **27**
* Port Royal—Berthollet, *correspondance* **83** **91**
* Glacière—Arago, *correspondance* **59** **83**
* Glacière—Nordmann
* Glacière—Auguste Blanqui, *correspondance M6* **64**
* Daviel
* Glacière—Tolbiac, *correspondance* **62** **BM**
* Parc Montsouris
* Amiral Mouchez Charbonnel *(direction Pte de Saint-Ouen)*
* Cité Universitaire *(direction Stade Charléty)*, *correspondance RER B* **T****3a**
* **Stade Charléty—Porte de Gentilly**, *correspondance* **T****3a** **67**  **OrlyBus**

## Exploitation de la ligne

### Fréquentation

La fréquentation est exprimée en nombre de voyageurs par créneau.

 le samedi | 4 130
 les dimanches et jours fériés | 3 215

### Fréquence

La ligne 21 est exploitée avec un parc de 30 véhicules standards offrant les fréquences suivantes :

 le samedi | 11 min
 les dimanches et jours fériés | 14 min

### Amplitude horaire

La ligne fonctionne du lundi au samedi de 5h50 à 0h30 et les dimanches et fêtes à partir de 6h55. *(source Wikipédia)*

### Chronologie

* 06/09/2020 : mise en service de la ligne
* 06/09/2020 : ajout de 30 Iveco Urbanway 12 GNV