Transdyn of California has been selected to maintain and expand Maryland Transportation Authority's video surveillance systems for three years with a further two-year option. The programme will include preventative and corrective maintenance of all the authority's existing and future video surveillance sites, which include the Baltimore Harbor and Fort McHenry tunnels. Baltimore Harbor tunnel (2.3 km) forms part of Interstate 895 and provides a major north-south bypass of Baltimore City. The 8-lane Fort McHenry Tunnel (2.2 km) forms part of Interstate 95 and links the southern and eastern areas of Baltimore City. Visit www.transdyn.com and www.marylandtransportation.com. 03/10.