The measure was implemented in the following stages: Stage 1: Preliminary studies (January 2009 – April 2011) – A study on real time information systems, optimal technical solutions for real time information system in Tallinn, definition of the high density PT stops; Stage 2: Negotiations with providers (March 2011 – July 2012) – Negotiations with providers of main technical solutions, displays, additional web page functionalities and mobile applications; Stage 3: Technical design and implementation of the solutions (December 2011 – October 2012) – Creation of additional functionalities of the web page, elaboration of software and mobile applications, design and installation of the electronic displays; Stage 4: Measure operational (December 2012) – The displays in PT stops became fully functional. The web page map with real time PT locations became operational in January 2013. As of January 2013 the introduction of Mobile application was planned to the end of March 2013.
The electronic displays are based on LED technology and the 6 most suitable locations were selected according to passenger volumes at specific stops, where the stops were servicing by the PT lines belonging to the PT priority system (PT vehicle priority in traffic lights, providing better reliability to the PT lines) and where displays would potentially have the highest effect on passenger satisfaction. The display size varies depending on the number of lines servicing the PT stops. The displays receive the real time information from the central server through radio communication, the update frequency of the real time information is 10 seconds.
The information displayed on PT stop display is: • Time; • PT line number and destination; • Timetable time of departure time of the next PT vehicle from the stop in a format hh:mm when there is more than 1 hour to the departure or the particular vehicle is not logged in to the system; • Estimated time of departure time of the next PT vehicle from the stop in minutes when there is less than 1 hour to the arrival and when the particular vehicle is logged in to the system; • Information on problems with PT.
Visually impaired persons can also receive audio information from the display with their compatible wireless devices.
The webpage for PT schedules is located at http://soiduplaan.tallinn.ee/. The page provides information on PT lines, schedules, stops, vehicle locations, predicted arrival times at PT stops, trip planning and ticket information. The data update frequency is currently (January 2013) up tu 30 seconds but it is planned to be reduced.
The real time information used in all three applications is based on GPS-positioning information from PT vehicles. The information is sent from PT vehicles to the central server through radio communication and it can be used for a variety of applications and services.