Influence of length of deceleration lane and safety functionality

Alfredo García García
Professor.
Department of Transportation
Polytechnic University of Valencia

Mario A. Romero Rojas
doctorando
Department of Transportation
Polytechnic University of Valencia

ABSTRACT
Research has found high accident rates on deceleration lanes, but these rates vary with the length of the rail. The usually adopted models do not fit the experimental observations. Due to the improvement of a section of the highway CV-35 in Valencia, it has become twisted lane in one of deceleration. This has allowed, for the first time on the same stage to analyze the influence of the length of the deceleration lane and safety functionality. Output maneuvers have been analyzed in terms of the length of the track: trajectories, speeds, decelerations and location. We carried out a detailed study of the potentially dangerous maneuvers. It has been found that very long or very short rails are less safe, being the optimal intermediate lengths.

KEYWORDS
geometric design, deceleration lane, safety