Rivera-Rodríguez, Jorge J.
Loading...
1 results
Publication Search Results
Now showing 1 - 1 of 1
Publication Gap acceptance studies and critical gap times for two-way stop controlled intersections in the Mayagüez Area(2006) Rivera-Rodríguez, Jorge J.; Valdés Díaz, Didier M.; College of Engineering; González Quevedo, Sergio; Luyanda Villafañe, Felipe; Department of Civil Engineering; Bartolomei Suárez, Sonia M.Traffic analyses of priority intersections in Puerto Rico are currently performed using parameters obtained from the Highway Capacity Manual (HCM). These values were obtained from studies performed in other environments that not necessarily represent traffic conditions in Puerto Rico. The main purpose of this study was to determine critical gap times for left turns from the minor road, right turns from the minor road and left turns from the major road on two-way stop controlled intersections in the Mayagüez area. During the study period, it was observed that drivers, especially in right turn maneuvers in the minor stream, did not come to a complete stop before entering the intersection. If the lag was large enough for acceptance, then drivers continued without stopping. For left turns from the minor road, the study determined that the majority of drivers (55.5%) will accept gaps in the range of 5 seconds or greater. For this maneuver the critical gap obtained is 5.1 seconds. The gap acceptance study for right turn maneuvers from the minor road determined a critical gap of 4.7 seconds. In addition, the critical gap for left turns from the major road was determined to be 3.95 seconds. Critical gaps from the HCM were compared to those obtained from field studies. It can be clearly seen that Puerto Rican drivers in the Mayagüez area accept gaps that are smaller than those presented in other regions.