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Title: EFFECT OF LANE WIDENING ON LATERAL DISTRIBUTION OF TRUCK WHEELS
Accession Number: 00607725
Record Type: Component
Availability: Find a library where document is available Abstract: Past field studies of lateral distribution of trucks on highway pavements are limited in their relevance to current design practices and truck size limits. In particular, little information is available on the effect of widened concrete slabs on lateral distribution of trucks. The Illinois Department of Transportation has constructed test sections of "widened-lane" pavements with 18-in. and 20-in. slab extensions on I-57. Truck wheel placements on these test sections were compared with those observed on nearby conventional 12-ft pavement slabs in a recent study conducted at the University of Illinois. Continuous filming of truck wheel positions was performed with an 8-mm camera mounted on bridges over the highway. Wheel positions were determined to within approximately 0.5-in. precision by scaling distances measured on the films to known dimensions on the pavements. The mean placement of the wheels of over 900 trucks observed on the control sections was about 22 in. from the slab edge. About 2.5% of the wheels passed within 6 in. of the slab edge. On the widened-lane sections, the mean placement of truck wheels was about 2 in. closer to the lane edge (marked by the paint stripe) but still 38 to 40 in. away from the slab edge. No slab edge loadings were observed among more than 1,300 observations of truck wheel placements on the widened-lane pavement sections. The results suggest that lane widening is likely to be a cost-effective design improvement for concrete highway pavements that otherwise would be vulnerable to transverse fatigue cracking as a predominant mode of failure.
Supplemental Notes: This paper appears in Transportation Research Record No. 1286, Design and Evaluation of Rigid and Flexible Pavements 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01411074
Authors: Benekohal, Rahim (Ray) FHall, Kathleen TMiller, Harlan WPagination: p. 57-66
Publication Date: 1990
Serial: ISBN: 0309050707
Features: Figures
(4)
; References
(23)
; Tables
(6)
TRT Terms: Uncontrolled Terms: Subject Areas: Design; Highways; Motor Carriers; Pavements; Planning and Forecasting; I21: Planning of Transport Infrastructure; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Apr 30 1991 12:00AM
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