Since 1928, Asplundh Tree Expert has provided line clearance services to the utility industry. It serves utilities and municipalities throughout the United States, Canada, Australia and New Zealand. The company also holds an interest in fountains, a utility services and vegetation management company in the England. Asplundh Tree Expert also performs right-of-way clearing and maintenance and vegetation management with herbicides. It also offers meter reading and installation, underground utility locating, infrared scanning, overhead and underground line construction, utility pole maintenance and street lighting services. The company has diversified to specialized markets, such as vegetation control for railroads and pipelines, municipal utility, and street and park tree trimming, one-call center operations, traffic signal and highway lighting construction and maintenance and outdoor advertising maintenance. Asplundh Tree Expert has headquarters in Willow Grove, Pa., and locations throughout the United States. In 2006, Forbes listed Asplundh Tree Expert as the 138th-largest private company.