NS VIRM

The NS DD-VIRM, full name DubbeldeksInterregiomaterieel or Verlengd InterRegio Materieel, Electric Multiple Units (EMUs) trains were built by De Dietrich or Talbot between 1994 and 2009. They are operated by the Nederlandse Spoorwegen in the Netherlands.

Names

First generation

The first generation of DD-IRM were delivered from 1994 to 1996 as three and four car units. The three car units were delivered in the 82xx class and the four car units delivered as 84xx. The first batch of 290 double deck coaches (individual) were delivered. The first 47 were built by De Dietrich and from then on by Talbot.

As the coaches were individual but would run as a unit, they are individually numbered. Collectively they have a set number e.g., 8201, having coach number 380 8001. However, there are no double numbers, for example there can not be an 8201 and 8401 at the same time.

In 2000 an order was placed for new coaches. The 3 car sets were to be upgraded to 4 car sets, and the four car sets upgraded to 6 car sets. This is why they are now called VIRM (V = verlengd - extended). These were renumbered into the 94xx series and the 86xx series. These sets were formed between 2001 and 2005.