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Field and Laboratory Study to Establish Truck Escape Ramp Design Methodology. Volume 2. Final Report.

PB89133276

Publication Date	1988
Personal Author	Wambold, J. C.; Rivera-Ortiz, L. A.; Wang, M. C.
Page Count	240
Abstract	One of the best and most frequently used mechanisms for stopping runaway trucks is the truck escape ramp, in particular, the gravel arrester bed. To learn more about the energy-absorbing characteristics of the stone and to develop better design criteria, the Pennsylvania Transportation Institute (PTI) conducted full-scale testing of gravel arrester beds. The report presents a summary of the data taken, the methods used for data reduction and analysis, and conclusions based on these tests, and recommendations for gravel arrester bed design are given in chapter 8 of Volume 2. For the study, PTI constructed two 300-ft-long test ramps, one filled with rounded river-bed gravel and the other with more angular crushed gravel. The river gravel exhibited greater tire penetration and volume of stones displaced along with greater deceleration forces than the crushed gravel. Finally, mounds and crash barrels filled with stone were tested and evaluated. Based on test results, a model was developed for use in arrester bed design.
Keywords	Trucks Ramps Escape systems Stopping Containment Gravel Foundations Accident prevention Road tests Performance tests Highways Safety engineering Graphs(Charts)
Source Agency	Federal Highway Administration Pennsylvania Department of Transportation
NTIS Subject Category	85D - Transportation Safety 85H - Road Transportation 50A - Highway Engineering 91B - Transportation & Traffic Planning 43G - Transportation
Corporate Authors	Pennsylvania Transportation Inst., University Park.; Federal Highway Administration, Harrisburg, PA. Pennsylvania Div.; Pennsylvania Dept. of Transportation, Harrisburg. Office of Research and
Supplemental Notes	See also Volume 1, PB89-133268. Sponsored by Federal Highway Administration, Harrisburg, PA. Pennsylvania Div., and Pennsylvania Dept. of Transportation, Harrisburg. Office of Research and Special Studies.
Document Type	Technical Report
Title Note	Rept. for Jun 84-Dec 86,
NTIS Issue Number	198906

Field and Laboratory Study to Establish Truck Escape Ramp Design Methodology. Volume 2. Final Report.

Field and Laboratory Study to Establish Truck Escape Ramp Design Methodology. Volume 2. Final Report.
PB89133276

Publication Date	1988
Personal Author	Wambold, J. C.; Rivera-Ortiz, L. A.; Wang, M. C.
Page Count	240
Abstract	One of the best and most frequently used mechanisms for stopping runaway trucks is the truck escape ramp, in particular, the gravel arrester bed. To learn more about the energy-absorbing characteristics of the stone and to develop better design criteria, the Pennsylvania Transportation Institute (PTI) conducted full-scale testing of gravel arrester beds. The report presents a summary of the data taken, the methods used for data reduction and analysis, and conclusions based on these tests, and recommendations for gravel arrester bed design are given in chapter 8 of Volume 2. For the study, PTI constructed two 300-ft-long test ramps, one filled with rounded river-bed gravel and the other with more angular crushed gravel. The river gravel exhibited greater tire penetration and volume of stones displaced along with greater deceleration forces than the crushed gravel. Finally, mounds and crash barrels filled with stone were tested and evaluated. Based on test results, a model was developed for use in arrester bed design.
Keywords	Trucks Ramps Escape systems Stopping Containment Gravel Foundations Accident prevention Road tests Performance tests Highways Safety engineering Graphs(Charts)
Source Agency	Federal Highway Administration Pennsylvania Department of Transportation
NTIS Subject Category	85D - Transportation Safety 85H - Road Transportation 50A - Highway Engineering 91B - Transportation & Traffic Planning 43G - Transportation
Corporate Authors	Pennsylvania Transportation Inst., University Park.; Federal Highway Administration, Harrisburg, PA. Pennsylvania Div.; Pennsylvania Dept. of Transportation, Harrisburg. Office of Research and
Supplemental Notes	See also Volume 1, PB89-133268. Sponsored by Federal Highway Administration, Harrisburg, PA. Pennsylvania Div., and Pennsylvania Dept. of Transportation, Harrisburg. Office of Research and Special Studies.
Document Type	Technical Report
Title Note	Rept. for Jun 84-Dec 86,
NTIS Issue Number	198906