Features
| 6 |
President's Message
By Paul Eng-Wong, P.E. (F) |
| 22 |
HCM Roundabout Capacity Methods and Alternative Capacity Models
By Mark Lenters, P.E., P.Eng and Clayton Rudy, E.I.T.
In this article, two alternative adaptation methods are presented
and contrasted to demonstrate their correlation with recent
U.S. practice, research, and observations of built roundabouts. |
| 28 |
The Influence of Driver Sight Distance on Crash Rates and Driver Speed at Modern Roundabouts in the United States
By Michael Angelastro, P.E., PTOE
This paper investigates the driver sight distance as an independent
variable to predict passenger vehicle speeds and vehicle
crash rates at roundabouts in the United States based on data
collected at 26 single-lane roundabouts. |
| 40 |
Drivers’ Understanding of Innovative Roundabout Traffic Control Devices
By Fred R. Hanscom, P.E.
The 2009 edition of the Manual on Uniform Traffic Control
Devices contains innovative sign and pavement marking treatments
to assist drivers with navigating roundabouts. The human
factors laboratory study described in this paper was undertaken
to determine driver understanding of the new devices. |
| 46 |
What Fuels Will Move Us?
By Bill Barker, AICP
This article speaks to the changes the transportation industry
is going through in the use of fuels and energy. It provides an
overview of energy supply and demand as well as forecasts of
prices and potential shortages. |
|
July 2010
Vol. 80 (7)
News
Departments
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On The Cover
Malta NY, USA. Credit: Fred R. Hanscom.
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