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39 rollers in seating the aggregate as quickly as possible in the 4. Plastic bristles for rotary brooms will minimize aggre- roller operation. gate dislodgment during brooming. EQUIPMENT CONCLUSIONS AND BEST PRACTICES Although not a best practice pertaining to this synthesis, the equipment and procedures used overseas show great Superior equipment does not prevent all failures. However, promise for application in North America. The use of water- the findings of this portion of the study do result in several retexturizing machines to prepare the road's surface texture best practices with respect to chip seal equipment. and therefore allow a constant rate of binder to be shot should be investigated for North American projects. Doing so would 1. Use computerized distributors. be particularly useful on any roads whose surface is bleed- 2. Preproject analysis of the ability of the chip seal equip- ing. Equipment best practices cannot be isolated from the ment fleet to keep up with the production rate of the dis- presence of experienced equipment operators and the use of tributor is important. regimented construction practices. The following chapter 3. The use of variable nozzles reduces the amount of describes how the construction phase ultimately determines binder that is sprayed in the wheelpaths. which projects are successes.