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DEVELOPMENT OF SPEED-FLOW RELATIONSHIPS FOR INDONESIAN RURAL ROADS USING EMPIRICAL DATA AND SIMULATION.
| 题名： | DEVELOPMENT OF SPEED-FLOW RELATIONSHIPS FOR INDONESIAN RURAL ROADS USING EMPIRICAL DATA AND SIMULATION. |
| 作者： | Bang-KL; Carlsson-A; Palgunadi |
| 关键词： | INDONESIA-; RURAL-ROADS; SPEED-FLOW-RELATIONSHIPS; MEASUREMENTS-; SIMULATION-MODELS; TWO-LANE-ROADS; TERRAIN-; OVERTAKING-; SIGHT-DISTANCES; TRAFFIC-CAPACITY |
| 摘要： | Highway capacity manuals from developed countries cannot be applied successfully in Indonesia because of large differences in driver behavior, traffic composition, and level of roadside activities. The Indonesian Highway Capacity Manual project was started in 1990 and has resulted in interim manuals for urban traffic facilities, interurban roads, and superhighways. Speed-flow relationships for interurban rural roads have been obtained from a combination of direct speed-flow measurements and simulation, using the VTI microscopic simulation model for two-lane, two-way undivided roads. The empirical data were used mainly for calibrating and validating the simulation model and for analyzing the effect on speed and capacity of cross-section and environmental conditions. The simulation model was used for determining speed-based light-vehicle units (used instead of passenger-car units) and speed-flow relationships for flat, rolling, and hilly terrain. The results can be summarized as follows: (a) the light-vehicle free-flow speed for a flat two-lane, two-way road at ideal conditions is considerably lower in Indonesia than in developed countries; (b) free-flow speed is reduced by road width and side friction such as public transit stops, pedestrians, nonmotorized vehicles, and entries and exits from roadside properties and minor roads; (c) Indonesian drivers tend to overtake at short sight distances, which reduces the slope in the speed-flow curve; and (d) the capacity for two-lane, two-way roads is slightly higher in Indonesia than in developed countries. |
| 总页数： | Transportation Research Record. 1995. (1484) pp24-32 (1 Phot., 8 Fig., 5 Tab., 7 Ref.) |
| 报告类型： | 科技报告 |
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