A twin unit, twinset, or double unit is a set of two railroadcars or locomotives which are permanently coupled and treated as if they were a single unit. A twinset of cars or coaches can also be called a twin car. In US passenger railroad parlance, twin units are also known as married pairs.[1]
Twinset tram in the UK.Married Pair, 2 Car MUNI LRV2/3 on the N Judah, San Francisco, CA.
On passenger railroads, light rail, and monorail services, married pairs may have machinery necessary for full operation of the cars split between them. Items that are typically shared include transformers, motor controllers, dynamic braking grids, cabs, current collectors, batteries, and air compressors. This provides significant savings in both cost of equipment and weight, which increases performance and decreases energy consumption. The cost of operating such a pair may be slightly higher when the extra car in such a pair is not needed to meet level-of-service demands at a particular time.
twin, unit, married, pair, redirects, here, married, human, couples, marriage, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, examples, perspective, this, article, rep. Married pair redirects here For married human couples see Marriage This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages The examples and perspective in this article may not represent a worldwide view of the subject You may improve this article discuss the issue on the talk page or create a new article as appropriate August 2010 Learn how and when to remove this template message This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Twin unit news newspapers books scholar JSTOR November 2010 Learn how and when to remove this template message Learn how and when to remove this template message A twin unit twinset or double unit is a set of two railroad cars or locomotives which are permanently coupled and treated as if they were a single unit A twinset of cars or coaches can also be called a twin car In US passenger railroad parlance twin units are also known as married pairs 1 Twinset tram in the UK Married Pair 2 Car MUNI LRV2 3 on the N Judah San Francisco CA On passenger railroads light rail and monorail services married pairs may have machinery necessary for full operation of the cars split between them Items that are typically shared include transformers motor controllers dynamic braking grids cabs current collectors batteries and air compressors This provides significant savings in both cost of equipment and weight which increases performance and decreases energy consumption The cost of operating such a pair may be slightly higher when the extra car in such a pair is not needed to meet level of service demands at a particular time See also editCow calf Multiple unitReferences edit Klein Jonathan 1988 The economics of single vs married pair transit cars Chicago Transit Authority nbsp This rail transport related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Twin unit amp oldid 1196456867, wikipedia, wiki, book, books, library,
