Due to the deterioration of the u.s. highway system's pavements and bridges, construction rehabilitation has become a large scale effort. one of the safest and most efficient techniques for traffic control during rehabilitation of divided highways is two-lane two-way operation (tltwo). in this… More

Due to the downsizing of automobiles on u.s. highways, mini-cars have become a major part of the auto population. the light weight and high crush rate of these vehicles can causehigh velocity change levels when impacting most existing breakaway luminaire supports. this increases the probabili-ty of… More

New materials are being developed everyday and are revolutionizing products and processes at an astounding rate. in recent years, the roadside safety appurtenance field has been affected as well, as new materials have been applied to produce improved designs in a variety of situations. in recent… More

Current designs for rural safety mailboxes combined with a lack of safety design regulations, produce a hazardous situation for errant rural motorists. When impacted, rural mailboxes have been shown to dislodge from their posts and penetrate automobile windshields. In addition, rural residents are… More