02 TETRASUPPLEMENT


Phil Kidner CEO, TETRA Association


TETRA – trusted by public transport


TETRA communications are in use across the transport industry – road, rail, air and sea. The transportation sector is the second largest market for TETRA’s critical communications capability, only public safety has wider user base.


On public transport networks and services, passengers and staff benefit from TETRA technology on a daily basis. TETRA can be integrated with vehicle-tracking GPS systems to provide real-time timetable and journey information to customers at bus stops and on-board trams and metros. With fleet management systems, controllers can amend


services – perhaps by adding more vehicles – to better match service availability with demand. TETRA offers voice capabilities that


meet the specific needs of the transport sector. With public transport companies responsible for the safety of their passengers and their staff, a critical feature of a communications system is call quality. TETRA’s capacity


management features support rapid call set-up – across many users and over large areas – even while the network is being used heavily. Call clarity is exceptional due to digital technology and special coding algorithms that help to screen out background noise, enabling critical information to be heard and understood. Group calls can be activated at the touch of


a button – inside 500 milliseconds. This means almost instantaneous group communication, collaboration and coordination. Many TETRA solutions also enable calls to be recorded, so actions can be analysed and management and operational procedures refined as necessary. TETRA allows networks to be partitioned.


This ensures that different user groups and organisations have access to private communications over their own Virtual Private Network (VPN). If interoperability between transport operators is required, this can be securely enabled. TETRA systems and terminals offer true


interoperability achieved through the IOP Certification Process, a strict, independent and tightly controlled process developed by the TETRA Association to ensure a truly open multi- vendor market. This catalyses competition, and means network operators can choose different suppliers for different elements of their TETRA service, and end-users can choose between a range of terminal suppliers. A competitive market also means


The Istanbul City Municipality has implemented a multi-site TETRA system from Rohill covering the critical communication requirements of the public transport networks.


Eurotransport Volume 9, Issue 3, 2011


continuous development of new products, features and applications and improved price performance – enabling transport operators to take advantage of communications services that are robust, flexible, secure and cost effective.


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