If you've ever spent time driving in Pennsylvania, you've likely come across electronic changeable message signs on the road. These signs are designed to give you information on road and traffic ...

electronic road signs, emergency telephones and road lighting products and also supplies a range of directional and regulatory traffic signs and traffic control products to road traffic ...

The National Roads Telecom-munications Services (NRTS) project will upgrade 28 existing networks, providing a single IP-based system linking 14,000 electronic road signs, emergency telephones ...