Vestil Dock traffic systems are used for preventing accidents & injuries by providing clear communication between dock personnel & truck drivers through flashing red & green lights. These DTS Series traffic systems are available in two variants including DTS-5 economical models which never need bulb replacements and DTS-10 deluxe models, featuring incandescent lights(with a hood over each lens). While the DTS-10 models have aluminium construction, the DTS-5 models have polypropylene construction. Both systems having a red & a green light, are available in a wide variety on Raptor Supplies.