Société de Transport Interurbains du Val d'Oise
French bus operator historically responsible for the urban bus network serving Cergy-Pontoise in Val-d'Oise.
Last updated August 25, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Société de Transport Interurbains du Val d'Oise, commonly known as STIVO, was the historic operator of the urban bus network serving Cergy-Pontoise, the planned new town in the Val-d'Oise department of France. The company was established in 1974 by Cars Giraux and Cars Lacroix to provide transport for a rapidly growing population. Its initial network consisted of only two lines, but it expanded quickly as Cergy-Pontoise developed. In 1975, RATP took responsibility for managing the new-town network and chartered STIVO as its operating company. The lines were initially numbered in the 400 series, following the Île-de-France numbering convention used for new towns, and the network had grown to six lines by that stage. STIVO's operating base developed alongside the network. Initially based in Pontoise, the company moved to Génicourt in 1986, where it obtained a dedicated depot after previously parking buses at bus stations. By 1989, the network had reached fourteen lines. During the 1990s, services were marketed under the StAN name. The network continued to expand and reorganize, including the creation in 1994 of the 434 North and 434 South orbital services, which connected the new town and surrounding municipalities. These routes were associated with a turquoise and light-blue visual identity incorporating an N-shaped logo referencing the meandering Oise River. The operator experienced several changes in branding and route structure during the late 1990s and 2000s. The opening of Neuville-Université station in 1999 led to changes involving lines 441 and 454, which were replaced by the 434 North and 434 South services. In 2000, the network was recognized as the best bus network in the Île-de-France region in terms of service level. The inherited 400-series numbering was abandoned the following year, with routes such as line 442 becoming line 42. A new visual identity and livery were introduced in 2004, followed by the creation of a daytime branch of line 39 to Boisemont in 2005. Following the sale of the Giraux group in early 2007, STIVO became a joint subsidiary associated with the Lacroix group and RATP Dev. The network subsequently adopted the STIF livery in 2010 and moved its depot from Génicourt to Saint-Ouen-l'Aumône in 2013. Fleet modernization became increasingly visible during the 2010s: hybrid buses began arriving in 2015, depot expansion was undertaken in 2016, and the My Stivo smartphone application offering real-time timetable information was launched that year. A seasonal route 29 was added in 2017, while the Île-de-France Mobilités livery entered service in 2018. Natural-gas buses began operating in December 2020. The network continued to evolve shortly before the Île-de-France bus market was opened to competition. In November 2023, STIVO introduced line 46, providing a fast connection of approximately twenty minutes between Pontoise station and Cergy-Saint-Christophe station and serving destinations including the Plaine des Linandes, Aren'Ice, and Dassault Aviation. From 1 January 2024, the Cergy-Pontoise Confluence bus network was created under a public-service delegation organized by Île-de-France Mobilités. The operating contract was awarded to the CFTR group through Francilité Seine et Oise. The available references document this transition but do not establish whether STIVO itself continued as a legal entity or brand afterward.
History
STIVO was created in 1974 by Cars Giraux and Cars Lacroix to serve the expanding population of Cergy-Pontoise, a planned town in the Val-d'Oise department. Its first network had two lines. In 1975, RATP began managing the new-town network and chartered STIVO as the historical operating company. The lines were placed in the 400 series, consistent with the Île-de-France numbering system used for new towns, and the network expanded to six lines. The company was initially based in Pontoise. In 1986 it moved to Génicourt and acquired a dedicated depot, replacing the earlier practice of storing buses at bus stations. By 1989, the network had expanded to fourteen lines. During the 1990s, services were marketed under the StAN name and continued to use route numbers in the 400 range. In 1994, the operator created lines 434N and 434S, orbital services designed to connect the new town and several peripheral municipalities. The network adopted turquoise and light-blue colors and an N-shaped logo associated with the Oise River's meanders. The opening of Neuville-Université station in 1999 prompted a route reorganization. Lines 441 and 454 were replaced by the 434 North and 434 South services, later identified as lines 35 and 34. In 2000, the network was named the best bus network in Île-de-France in terms of service level. In 2001, the 400-series route-numbering convention was dropped; for example, line 442 became line 42. On 17 September 2004, STIVO introduced another livery, developed by Couleur et matière in coordination with a change to the new town's logo. A daytime branch of line 39 was created in September 2005 to serve Boisemont after the commune joined the urban community. In early 2007, following the sale of the Giraux group, STIVO became a joint subsidiary associated with the Lacroix group and RATP Dev. The network adopted the STIF livery in November 2010. In June 2013, its depot moved to Saint-Ouen-l'Aumône, at 13 rue de la Tréate. Fleet modernization became a notable part of the operator's later history. The first hybrid buses arrived in July 2015 and began service on 10 August. The depot was expanded in February 2016 to accommodate 45 additional articulated buses in anticipation of possible network growth. In September of the same year, STIVO launched the My Stivo smartphone application, which supplied real-time timetable information. A summer route 29 was created in 2017, and the Île-de-France Mobilités livery was introduced in January 2018. The first natural-gas buses entered service in December 2020. RATP Cap Île-de-France took over RATP Dev's Île-de-France operations in 2021. On 6 November 2023, STIVO opened line 46, a fast route linking Pontoise station with Cergy-Saint-Christophe station in around twenty minutes and improving access to the Plaine des Linandes, Aren'Ice, and Dassault Aviation. The opening of competition in Île-de-France public transport led to the creation of the Cergy-Pontoise Confluence network on 1 January 2024. Île-de-France Mobilités had launched a tender for a six-year public-service delegation, and its board selected the CFTR group, through Francilité Seine et Oise, on 28 June 2023. The available material does not confirm the subsequent legal status of STIVO as a company or brand.
- 2024
Cergy-Pontoise Confluence network begins
[1]Competitive tendering in Île-de-France resulted in the creation of the Cergy-Pontoise Confluence network and the appointment of Francilité Seine et Oise as operator.
- 2023
Line 46 opens
[1]The new route connected Pontoise station and Cergy-Saint-Christophe station and served the Plaine des Linandes, Aren'Ice, and Dassault Aviation.
- 2020
Natural-gas buses begin operating
[1]The first natural-gas buses entered the STIVO network in December.
- 2016
Depot expansion and digital passenger information
[1]The depot was expanded for potential network growth, and the My Stivo real-time timetable application was launched.
- 2015
Hybrid buses enter service
[1]The first hybrid buses arrived during the summer and began passenger service on 10 August.
- 2013
Depot moves to Saint-Ouen-l'Aumône
[1]STIVO relocated its depot to 13 rue de la Tréate in Saint-Ouen-l'Aumône.
- 2007
Ownership structure changes after Giraux sale
[1]After the Giraux group was sold, STIVO became a joint subsidiary associated with the Lacroix group and RATP Dev.
- 2001
400-series numbering is abandoned
[1]The former RATP-derived numbering system was replaced; line 442, for example, became line 42.
- 2000
Network receives regional service-level recognition
[1]The network was named the best bus network in Île-de-France in terms of service level.
- 1999
Network reorganized around Neuville-Université
[1]The opening of Neuville-Université station led to the replacement of lines 441 and 454 by the 434 North and 434 South services.
Products and positioning
A local public-transport operator focused on urban and suburban bus mobility in the Cergy-Pontoise conurbation, with an emphasis on network coverage, route restructuring, passenger information, and gradual fleet modernization.
Urban public transport · 1974
Cergy-Pontoise urban bus network
STIVO's principal offering was the scheduled urban bus network serving Cergy-Pontoise and surrounding municipalities in Val-d'Oise. The network developed from two lines in 1974 to fourteen lines by 1989 and underwent repeated route-numbering, orbital-service, and coverage changes as the new town expanded.
Fast urban bus route · 2023
Line 46
Introduced on 6 November 2023, line 46 provided a fast connection between Pontoise station and Cergy-Saint-Christophe station, with a journey of approximately twenty minutes. It also improved bus access to the Plaine des Linandes, Aren'Ice, and Dassault Aviation.
Passenger-information application · 2016
My Stivo
My Stivo was a smartphone application launched in 2016 to provide real-time bus timetable information for passengers using the STIVO network.
Bus fleet · 2015
Hybrid and natural-gas bus fleet
STIVO introduced hybrid buses in 2015 and natural-gas buses in 2020 as part of its documented fleet modernization. The available reference does not specify the complete fleet composition or the precise models assigned to each propulsion category.
Brand decisions
2024
Transition to the Cergy-Pontoise Confluence operating networkStrategyBackground
Île-de-France's public-transport market was opened to competition, and Île-de-France Mobilités initiated a tender for a six-year public-service delegation.
Action taken
The Cergy-Pontoise Confluence network began on 1 January 2024. Francilité Seine et Oise, operating within the CFTR group, was selected by the Île-de-France Mobilités board on 28 June 2023.
Aftermath
The available material documents a change in the network's operating framework but does not establish whether STIVO continued as a legal entity or brand.
2023
Create line 46Product launchBackground
The Cergy-Pontoise area required stronger connections between Pontoise, Cergy-Saint-Christophe, and developing destinations in the Plaine des Linandes.
Action taken
STIVO launched line 46 on 6 November 2023 as a fast connection between the two railway stations and nearby destinations.
Aftermath
The route strengthened access to Aren'Ice, Dassault Aviation, and the Plaine des Linandes.
2020
Introduce natural-gas busesProduct launchBackground
After introducing hybrid vehicles, STIVO continued its documented transition toward alternative propulsion.
Action taken
The first natural-gas vehicles entered service in December 2020.
Aftermath
The network added natural-gas buses to its operating fleet; no further fleet or emissions figures are provided in the reference.
2015
Introduce hybrid busesProduct launchBackground
The operator began modernizing its fleet during the 2010s.
Action taken
Hybrid buses arrived in July 2015, with the first vehicle entering service on 10 August.
Aftermath
Hybrid propulsion became part of STIVO's subsequent fleet profile.
2001
Replace the inherited 400-series route numberingStrategyBackground
The network had used route numbers in the 400 range inherited from the RATP system for Île-de-France new towns.
Action taken
STIVO abandoned the 400-series convention and adopted shorter route numbers, including changing line 442 to line 42.
Aftermath
The change established a different route-numbering structure for the Cergy-Pontoise network.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/société-de-transport-interurbains-du-val-doise · Editorial policy · How profiles are compiled