CalAmp Corp., provider of wireless products, services and solutions, was awarded a $4.7 million extension of its development contract to help design and supply initial radios for the North American interoperable Positive Train Control system.

"Railway safety is a national imperative, with a federal mandate calling for implementation of PTC on the nation's rails. This law requires railroads to deploy a new dedicated nationwide wireless communications infrastructure to enable the PTC Safety Overlay system," said Michael Burdiek, CalAmp president and CEO.

The contract add-on increases the quantity of pre-production radios to be delivered by CalAmp for use in field testing and early deployments by several North American Class 1 railroads and brings the total value of the contract to approximately $19 million. CalAmp expects to complete fulfillment of this follow-on order during the first half of calendar 2012.