1989•ITE journalRequires access

Design lengths of left- or right-turn lanes with separate signal phases

J C Oppenlander, Jane Oppenlander

Abstract

A study is described which applied a rational procedure to determine the design length for left-turn or right-turn lanes with separate signal control. For this type of intersection regulation, the arrival and service rate equations are reasonably accurate predictors for traffic operations of both left and right-turning lanes. The design criteria are applicable for those signalized intersections where special turning lanes are deemed to be warranted on one or more approaches. In any situation for turn lanes with separate-phase control, design tradeoffs between length of turning lane and ratio of green time to cycle length are readily achieved with the tabulated values. Any intersectional design should be guided by geometric and/or control warrants in terms of the necessities for special turning lanes and for separate signal phases that are applicable for these turning-lane lengths.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 10 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Intersection (aeronautics), Turn (biochemistry), SIGNAL (programming language), Control (management), Phase (matter), Computer science, Simulation, Control theory (sociology)