First Name | Bob |
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Last Name | Henderson |
Email Address | bhenders51@gmail.com |
Affiliation | |
Subject | Aerodynamic improvements increase braking distances |
Comment | Much work has gone into creating more aerodynamically efficient trucks and trailers. If the brakes are not improved at the same time then it will take more distance to get a class 8 truck and trailer to come to a full stop if every thing else is equal except for the aerodynamic improvement. This is a safety issue that needs to be addressed. An 80,000 lb truck takes 525 feet to stop from 65 mph according to Utah Dept of Transportation. (http://www.udot.utah.gov/trucksmart/dld/DriversEd_Manual_WEB.pdf) A 10% aerodynamic improvement will add 52 feet to the stopping distance, or about 3 car lengths. Do we mandate that brake efficiency increase with aerodynamic improvements? What percent of aerodynamic improvement will trigger the requirement for improved braking? 5%? 10%? Who should do the analysis? |
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Date and Time Comment Was Submitted | 2015-04-17 07:44:10 |
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