For more than 20 years prior to joining the ITS industry, Mike Payne of Idris, part of Federal Signal Technologies, worked for Vodafone - the world's biggest mobile operator. Here, he considers how the road tolling sector can grow and learn from the cellular industry. The global cellphone has been one of the most successful collaborative technology projects in the last 30 years. Mobile phone technology developed throughout the 20th century with the first public service in the early 70s. This was followed by