Spain’s Indra has signed a $314m contract to implement the entire ticketing and access control systems for the Riyadh Metro, which is currently under construction.

Arriyadh Development Authority (ADA) awarded the contract to Indra after receiving interest from 10 international firms.

The deal is the biggest contract of its kind and will be completed over a period of 54 months. The contract also includes provision of maintenance and assistance services for 10 years.

ADA awarded the three main packages to build the metro and supply rolling stock in July 2013.

The planned metro network features six lines – Blue, Green, Red, Orange, Yellow and Purple. It will have 85 air-conditioned stations. The lines will cover a total length of 180 kilometres.