Browsing Wisconsin Traffic Operations and Safety (TOPS) Laboratory by Title
Now showing items 5-7 of 7
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Traffic characteristics of protected/permitted left-turn signal displays
(2000)At least four variations of the permitted indication in protected/permitted left-turn (PPLT) control have been developed in an attempt to improve the level of driver understanding and safety. These variations replace the ... -
Traffic conflicts associated with protected/permitted left-turn signal displays
(2000)Several different protected/permitted left-turn (PPLT) signal displays are used in the United States, varying in configuration and permitted indication. Questions remain as to the safety implications of using each type ... -
Use of protected/permitted left-turn signal control in the U.S.
(1999)The growing level of traffic demand on urban and rural roadways has led to increased use of protected/permitted left-turn (PPLT) signal control. PPLT signal phasing provides an exclusive phase for left turns as well as a ...