"Office of Safety and Traffic Operations Research and Development, Federal Highway Administration." . . . . "Two lane highways." . . "This report is an Informational Guide for highway agencies on the use of low-cost improvements to alleviate operational problems on two-lane highways. The Guide addresses both passing and turning improvements that can be constructed for a lower cost than construction of a continuous four-lane highway. The passing improvements presented in the Guide include passing lanes, climbing lanes, short four-lane sections, turnouts, shoulder driving, and shoulder use sections. The turning improvements included are intersection turn lanes, shoulder bypass lanes, and two-way left-turn lanes. Design and traffic control guidelines presented for these improvements include location and configuration guidelines, geometric design criteria, recommended signing and marking practices, and operational and safety effectiveness estimates."@en . . . . . . . . . . . . . "Low-cost methods for improving traffic operations on two-lane roads informational guide"@en . . . . . . . . . . . . . . . "This report contains guidance on the use of low-cost methods for improving traffic operations on two-lane rural roads to relieve passing restrictions, and to reduce delay caused by turning movements."@en . . . . . "Low-cost methods for improving traffic operations on two-lane roads : informational guide"@en . "Low-cost methods for improving traffic operations on two-lane roads : informational guide" . . . "Climbing lanes." . . "Turning traffic." . . "Turner-Fairbank Highway Research Center (U.S.)" . . "Passing." . .