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NDOT Research Blog

New AASHTO Publications

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LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 1st Edition          Mechanistic-Empirical Pavement Design Guide: A Manual of Practice, 2nd Edition

These new AASHTO publications represent significant updates to two important previous publications.  From the AASHTO website: 

LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 1st Edition  
The first edition of the LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals incorporates and builds upon the design specifications found in the Sixth Edition of Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, which it supersedes. The specification includes current research on LRFD calibration, loads, and resistances plus relevant specifications from other AASHTO documents. Completely new sections on Fabrication, Construction, Inspection, and Asset Management based upon best practices have also been added. 

Mechanistic-Empirical Pavement Design Guide: A Manual of Practice, 2nd Edition  
This manual describes a pavement design methodology, termed mechanistic-empirical (M-E) pavement design, that represents a major change from the pavement design methods in practice today. Based on engineering mechanics that have been validated through extensive road test performance data, the manual presents information necessary for pavement design engineers to begin using the MEPDG design and analysis method.”

Both books are available for checkout at the NDOT Research Library.

Research Library New Location

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 Research Library Open for Business Moving wasn't a lot of fun, but we are proud to announce that the NDOT Research Library is now open and ready for business in its new location in the Annex Building directly east of the Headquarters building in Carson City.  We have even expanded, with additional shelf space for our quickly growing collection.  We look forward to continuing our service of providing high quality information to the employees of NDOT.  As always we believe that work can only be improved with access to the kind of quality information only the Library can provide.  And better work means a safer, more efficient transportation experience for all Nevadans.


Two New Research Reports

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Alcohol Impaired DrivingInvestigating the decision-making processes that contribute to impaired driving

Melanie P. Duckworth, Jenna G. Renqvist, Veronica Blas Dahir

This study tested the efficacy of two online video advertisements at reducing alcohol impaired (AI) driving willingness and behavior in college students at high risk for future AI driving. Findings revealed that students who viewed either advertisement reported decreases in general willingness to drive after drinking, while participants who did not view an advertisement reported increases in general willingness to drive after drinking. This study takes one of the first steps in developing an AI driving model that accounts for the influence of sociodemographic, dispositional, historical, and current AI driving risk factors as well as rational and emotional decision-making factors.


Investigation of an innovative maintenance contracting strategy: the performance-based maintenance contract (PBMC)

Pramen P. Shrestha, Aly Said, and Kishor Shrestha

This study compares the cost and quality of maintenance activities performed by state DOT employees versus private contractors using the performance-based maintenance contract (PBMC) model. Results showed that state DOTs were highly satisfied with work performed by DOT employees and lees so with private contractors when using both method-based contracting and performance-based contracting. Cost comparisons demonstrate that maintenance work performed by state DOT employees was less expensive than the same work performed by private contractors. Similarly, the quality of maintenance work performed by DOT employees versus contractors was better, with the one exception being striping.

By exploring innovative solutions, the NDOT Research Section strives to improve the safety and efficiency of transportation for all Nevadans.


Automated Vehicles

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Daimler Automated Truck Test

From being the first state to issue a license to the Google Car to recent world premier automated trucking tests by Daimler and Pelton, Nevada has positioned itself as a leader in the exploding world of autonoumous vehicles.  And NDOT Research is in the heart of it, helping to organize these historic tests, and looking to the future to see what will be coming down the road next.  Stay tuned!

Nevada DOT Engineer Bush published in national journal

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Anita BushCongratulations to Anita Bush, PE, of Maintenance and Asset Management, for her recent Transportation Research Record publication of “Cold In-Place Recycling in Nevada”.  Anita co-authored this paper with UNR students S. Sanjeevan, M. Piratheepan and Dr. Elie Hajj. Their field evaluation compared the performance of recycling methods alone and those topped with Hot Mix Asphalt. Those with the hot mix overlay had less than half the cracking over ten years. The study also found that newer, solvent-free emulsions didn’t hold up as long as traditional ones. This research is among many that help NDOT use the most cost-effective materials and time-saving methods to stretch our budgets and provide the public with the best and safest travelling experience on our highways.

New NDOT Research Reports Page

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All NDOT research reports are now available in one place on our website.  New reports will be published on this page as well. 

We're happy to be sharing the results of Nevada's research with the wider transportation world and hope other states will benefit by what is accomplished at NDOT.

Revolutionary New Idea: The Land Ferry

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Land FerryCheck out this amazing new proposal from NDOT that could someday revolutionize long distance freight and passenger travel.  Dreamed up right here in Nevada!