00732391

Component

https://doi.org/10.3141/1555-15

http://scholar.google.com...ieza&publication_year=1996

Truck performance observed on grades on National Highway 7 in Argentina is described. The observed weight-to-power ratio distribution in Argentina is shown to be considerably higher than that in North America. Also, a speed prediction model based on the simple force balance equation is fitted to the field data. The model explains about 80% of the observed variation, and for steep upgrades the predictions are similar to values observed in the United States. Acceleration and deceleration performance curves are also given. Finally, a validation of the model is presented by comparing the predicted and the observed speed profiles along two upgrades for trucks of known weight-to-power ratios. The shapes of the speed profiles predicted by the model closely replicate the observed speed profiles.

This paper appears in Transportation Research Record No. 1555, Highway Capacity Analysis for Interrupted and Uninterrupted Flow Facilities.

English

p. 114-123

1996

Transportation Research Record

0309059526

Figures (9) ; References (10) ; Tables (1)

Acceleration (Mechanics); Deceleration; Field studies; Horsepower; Mathematical models; Slopes; Traffic speed; Trucks; Validation; Vehicle performance

Field data; Grades; Speed profiles

Argentina

Argentina

Highways; Motor Carriers; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB

Feb 13 1997 12:00AM

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