Evaluation of Trapezoidal Shaped Grooves

TABLE OF CONTENTS

Page

EXECUTIVE SUMMARY

xi

INTRODUCTION

1

Objectives Background

3 4

EVALUATION APPROACH

5

Phase One—Literature Review and Theoretical Analysis

5

Advantages

5 6

Resistance to Hydroplaning

Drainage

10 10 10 11 11 12

Tire Damage Grooving Costs Cutting Speed

Rectangular Groove as an Alternate

Phase One Summary

Phase Two—Laboratory Test Area Evaluation

12

Discussion

12 14 18 19 22

Construction Process

The NAPTF Test Description Data Collection and Results

Phase Two Summary

Phase Three—Small Test Area Evaluation

23

Discussion

23 25 27 27

Construction Process Data Collection and Results Phase Three Summary

Phase Four—Large-Scale In Service Evaluation

28

Discussion

28 28 42

Test Site 1—Marine Corps Air Facility MCAF Quantico

Test Site 2—ORD

iii