DOI: https://doi.org/10.16925/in.v9i17.803

Consistency in Design: Prediction of the Operative Speed on Roads

John Jairo Posada

Abstract


Consistency is a concept that is used, among others, to assess road safety, in both the design and operational phases; for example, identifying changes in the operative speed with respect to speed of design along the length of a road. This article presents the concept of consistency in road design and its different approaches, showing the model principles that have been applied and are currently applied according to the speed profile. This is based on the operative speed observed when people drive their vehicles under free-flowing conditions along a road. In order to simplify operative speed prediction models, but without losing sight of the quality of the results, the authors propose to unify various existing models with similar characteristics, obtaining as a result high correlation coefficients that support their validity. They also recommend developing future models applied to Colombian conditions with one lane or bidirectional roadways as well as four-lane ones. 

Keywords


consistency; geometric design; operative speed; speed of design; speed profile;

References


Referencias

G. M. Gibreel, S. M. Easa, Y. Hassan, and I. A. El-Dimeery, “State of the art of highway geometric design consistency,” J. Transp. Eng., vol. 125, n.° 4, pp. 305-313, Jul. 1999.

AASHTO, A Policy on Geometric Design of Highways and Streets, 6th ed. Washington, DC: AASHTO, 2011.

S. M. Easa, “Improved speed-profile model for two-lane rural highways,” Spec. Issue Innov. Transp. Eng., vol. 30, pp. 1055-1065, Nov. 2003.

K. Fitzpatrick, “Evaluation of Desing Consistency Methods for Two-Lane Rural Highways, Executive Summary,” Federal Highway Administration, McLean, VA, Resumen Ejecutivo FHWA-RD-99-173, Aug. 2000.

F. Russo, R. Mauro, and G. Dell’ Acqua, “Rural highway design consistency evaluation model,” Procedia-Soc. Behav. Sci., vol. 53, n.° 1877-0428, pp. 953-961, 2012.

S. M. Easa and A. Mehmood, “Establishing highway horizontal alignment to maximize design consistency,” NRC Res. Press Web, vol. 34, pp. 1159-1168, Oct. 2007.

A. Jiménez, “Consistencia del trazado de las carreteras,” Universidad Nacional de Colombia. sede Medellín, trabajo final de la Especialización en Vías y Transporte, Feb. 2007.

A. Polus and C. Mattar-Habib, “New Consistency Model for Rural Highways and Its Relationship to Safety,” Journal of Transportation Engineering, vol. 130, n.° 3, pp. 286–293, May 2004.

K. Fitzpatrick et al., “Speed Prediction for Two-Lane Rural Highways,” Federal Highway Administration, McLean, VA, FHWA-RD-99-171, Aug. 2000.

L. Cardoso, “Análise crítica de modelos de verificação de consitência de traçado,” Tesis de Maestría, Escola Politécnica da Universidade de São Paulo, São Paulo, Br., 2007.

Federal Highway Admininstation (FHWA) and Turner - Fairbank Highway Research Center (TFHRC), Interactive Highway Safety Design Model (IHSDM), Design Consistency Module (DCM) Engineer’s Manual, IHSDM Versión 2.05b, DCM Versión 2.01d. McLean, VA: Federal Highway Admininstation (FHWA), 2003.

J. F. Sánchez and M. Castro, “Procedimientos de evaluación de la consistencia del trazado de las carreteras: IHSDM”, Rutas: Revista Técnica de Carreteras, n.° 96, pp. 5-14, 2003.

M. Castro, J. F. Sánchez, N. Ardila, and J. Melo, “Speed Models for Highway Consistency Analysis. A Colombian Case Study”, presentado en el 4to Simposio Internacional en Diseño Geométrico de Carreteras, Valencia, España, 2010.

J. F. Sánchez, “Metodología para la evaluación de la consistencia del trazado de carreteras interurbanas de dos carriles”, Tesis Doctoral, Universidad Politécnica de Madrid, Madrid, 2011.


comments powered by Disqus

Article Metrics

Metrics Loading ...

Metrics powered by PLOS ALM


Revista indexada en:

----

Contacto

Línea gratuita nacional

01 8000 420101

Dirección

Facultad de Ingeniería
Avenida Caracas no. 37-15 
Bogotá, D.C.

Teléfono

(57) (1) 3323565

(57) 3004956353

Revista en OJS implementada por Biteca Ltda.