The Aigle–Ollon–Monthey–Champéry railway line is a metre-gauge railway line in the Chablais region of Switzerland. It was originally built by the Chemin de fer Aigle–Ollon–Monthey (AOM) in 1907–1908. Ownership passed to the Chemin de fer Aigle-Ollon-Monthey-Champéry (AOMC) in 1946. Today, it is part of the Transports Publics du Chablais. Trains originate from bay platforms at Aigle, adjacent to the Simplon line of Swiss Federal Railways.

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Aigle–Ollon-Monthey-Champéry
Overview
Owner	Transports Publics du Chablais
Termini	Aigle Champéry, Switzerland
Service
Operator(s)	Transports Publics du Chablais
Depot(s)	Aigle
History
Opened	1907-1908
Technical
Line length	23.138 km (14.377 mi)
Rack system	Strub
Track gauge	Metre (3 ft 3+3⁄8 in)
Electrification	1500 V DC
Highest elevation	1,047 m (3,435 ft)
Maximum incline	13.5 %
Route map Legend km elev line A of the TPC from Leysin 0.0 Aigle bus to Villars BVB 404 m line D of the TPC to Les Diablerets 0.7 Aigle-Hôpital 404 m old route until 2006 1.5 Chalex workshop 2.1 St-Triphon-Village 405 m 3.6 Ollon bus to Villars BVB 468 m 4.3 Les Arnoux 430 m 4.9 Villy 407 m 6.9 St-Triphon-Gare 396 m Simplon Railway (SBB) autoroute A9 Collombey bridge over the Rhône (88 m) 7.7 Pont du Rhône 391 m Boeufferant bridge (150 m) 8.6 Corbier 394 m Tonkin line (SBB), Collombey station 9.4 Collombey-Muraz 395 m 10.4 Monthey-En Place 409 m 11.1 Monthey-En Place 409 m 11.0 Monthey-Ville 420 m old Monthey-Ville station (closed in 1986) old station approach (closed in 1976) Monthey (SBB) 406 m Tonkin line (SBB) 12.3 Monthey-Hôpital 549 m 13.5 Pont de Chemex 680 m 13.6 Chemex 687 m 14.1 Croix-du-Nant 708 m 14.6 Les Neys 718 m pont de St-André (130 m) 15.1 Route de Morgins 758 m Troistorrents tunnel (93 m) 15.8 Troistorrents 770 m Fayot bridge 18.1 Fayot 849 m 19.2 Val-d'Illiez 946 m 20.1 En Charnet 921 m 20.5 La Cour 922 m old course until 1990 22.5 Champéry-Village 1043 m 23.3 Champéry 1035 m Aerial cable car Champéry–Croix-de-Culet Source: Swiss railway atlas[1]

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The original intention had been to construct a railway from Aigle to Villars via Ollon and the concession was awarded on 27 April 1897. The Chemin de fer Bex-Gryon-Villars, however, strongly objected to the new line, arguing that there was insufficient traffic for two lines to serve Villars. After listening to the arguments, the federal authorities agreed and the original concession was withdrawn to be replaced by a new one for a line from Aigle to Monthey via Ollon. Concession to build the line was awarded on 6 February 1899 and was followed by that for a line from Monthey to Champéry on 22 June of the same year. The latter would be built by the Chemin de fer Monthey-Champéry-Morgins (MCM).

The AOM opened to traffic on 3 April 1907. Construction of the line to Champéry was slower and this was not ready for traffic by the time of the opening of the AOM, but took place on 30 January 1908. The plans for a line from the village of Val d'Illiez to Morgins were scrapped following poor profit forecasts.

From 1 January 1946 the two companies amalgamated to form the AOMC and plans were put forward to bring the line up to date. With regard to the rolling stock for the line, this meant the construction of four new railcars of Series BDeh4/4, numbered 511–4, which were delivered in 1954.

Passenger rolling stock has been regularly updated since that time, with the latest delivery, two twin-car railcars (numbered 591 and 592), arriving in 2001.

Although the line to Morgins was not built, the present day system does include a short, one kilometre section from the town station in Champéry to Champéry-Planachaux, where a lift forms part of the public access to the mountains.

Nowadays the AOMC is part of a larger, regional system operated, along with local bus services, by the Transports Publics du Chablais.

The line, built to a metre gauge, is 23.14 km (14.38 mi) in length of which 3.66 km (2.274 mi) is operated on the Strub rack system at a maximum gradient of 13.5%. The line rises from 404 m (1,325.5 ft) at Aigle to a height of 1,049 m (3,441.6 ft) at Champéry, a total rise of 645 m (2,116.1 ft). It is electrically operated by overhead contact at 850 V DC.

Important investment plans were developed by the AOMC in 1995. One plan involved the construction of a large maintenance workshop and stockholding facility. This work was completed and opened by the TPC in 2001. The new dépôt at En Châlex, alongside the line a short distance east of Aigle has over 26,500 sq.m. of space available for workshops and nowadays is the main depot for the three TPC narrow gauge lines in Aigle. Space is also available on the site for expansion in the future should this be required.

In 2006 the TPC commenced a programme of building works at Aigle in collaboration with the CFF/SBB/FFS. This was to bring together all three of the metre gauge lines at new platforms adjacent to those of the main line company. Work was completed in early 2007 when the services were brought together; the AOCM making use of the two platforms nearest the main line. These platforms feature new lighting and public address systems and have easy access from the town's Place de la Gare.

• (a) Builders plate shows 1986, delivery was in 1987
• (b) Not in service at present.

• AOMC car outside Aigle CFF station
• The former Monthey Ville terminus, September 1979
• Two railcars at Monthey in 1979. The terminus is now located further out of the town
• The AOMC left Monthey as a street tramway
• In 1979, goods and postal traffic was still handled
• The intermediate station and passing loop at Ollon
• A car leaves St Triphon, September 1979
• Old electric railcars BCFeh 4/4 6 of the Monthey–Champéry–Morgins-Railway on the Blonay–Chamby heritage railway, September 2015
• AOMC shuttle in Aigle station
• AOMC train in the new Aigle station

• ACMV Ateliers de constructions mécaniques de Vevey
• BBC Brown, Boveri & Cie
• BTB Birstigtalbahn (Baselland Transport)
• BT Bombardier Transportation (Vevey)
• SLM Swiss Locomotive and Machine Works, Winterthur.