Appendix C: Action Plan
The following is the table of current gaps and issues raised at the Workshop that should be addressed in the Roadmap. The numbers in parentheses correspond to the priority rating established by the Workshop participants. The letter code in the right hand column corresponds to the assigned area for future consideration of the pooled fund study. The areas are; A - Construction. B - Testing/Research, C - Education/Public education, D - Policy.
| Gap |
Assigned to |
| Clearinghouse |
| A template for the data on the clearinghouse web site(3) |
B |
| Shared wavfiles (1) |
C |
| Sharing data (2) |
B |
| List of acronyms and definitions |
All |
| Industry participation and contribution (1) |
|
| Establish ETG (measurement) |
| Meet more often and communicate more often, maybe subgroups (1) |
B |
| Quieter Current Pavement Technology |
| Consistent inter-agency reporting (1) |
All |
| Develop double layer porous asphalt (6) |
A,B |
| Synthesis of global practice (11) |
NCHRP |
| Pervious concrete/porous concrete overlay (1) |
A,B |
| Education/Noise 101 |
| Establish Noise 201 (1) |
C |
| Measurements |
| Measurement Methods (6) |
B |
| Improved noise metrics (0) |
B,D |
| We need a standard tire for noise testing (e.g., the SRTT) (11) |
B |
| What are acceptable variations of measurement methods? (0) |
B |
| Would it be useful to have a common, shared vehicle for noise testing? (1) |
B |
| Need more precise acoustic data to optimize noise mitigation strategies (0) |
B |
| Get public response to different pavements. (2) |
B,C |
| Can we describe the relative advantages/disadvantages of various measurement methods for different applications, specifically wayside and OBSI? (8) |
B |
| Identify storage for test tires (1) |
B |
| Create a recommended equipment list for measurement practitioners (e.g., hardness tester) (0) |
B |
| Identify age and wear parameters when test tire replacement is required (0) |
B |
| Validation of reference tire versus population (0) |
B |
| Develop an International Noise Index (INI) as an objective, reproducible, time-stable scale of noise generation potential based upon texture profile (6) |
B |
| Research Noise/Safety/Durability/Cost |
| Understanding the Durability of the Noise Reduction Effect (9) |
B,D |
| Understanding Pavement Characteristics and Noise (3) |
A,B |
| Can quieter pavements be built for studded tire applications? (1) |
A,B |
| We should look at what is happening inside the car. (0) |
B |
| Better understanding of meteorological effects (0) |
B |
| Improve noise modeling capabilities (2) |
B,D |
| Durable pavements with acoustic longevity (8) |
A,B |
| The effect of pavement absorption on the propagation of tire/pavement noise to the wayside (1) |
B |
| Traffic Mix Effects (5) |
B |
| Is the texture/noise relationship the same for trucks and passenger cars (4) |
A,B |
| What are the effects of "wide-based tires"? (0) |
B,D |
| Will truck volumes and weights continue to increase? (0) |
|
| Can we make pavements safe and quieter? (0) |
A,B |
| Better understanding of trucks (source contributions) (1) |
B, NCHRP 8-56 |
| Research Cost/Benefit |
| Cost/Benefits of Quieter Pavement (5) |
All |
| Can we monetize the benefits of quieter pavement? (1) |
All |
| Policy & Guidelines |
| Can we discuss modifications to the QPPP policy? (0) |
D |
| More tools in the noise mitigation toolbox (1) |
D |
| We should emphasize impact avoidance (2) |
D |
| Is it possible to do a user defined pavement type in TNM (4) |
D |
| Consistent and qualified reporting of data (1) |
D |
| Can we have pavement type (surface texture) turned on in TNM? (6) |
D |
| Can we do pavement type (surface texture) from other similar states? ((4) |
D |
| Establish a policy ETG (1) |
D |
| Establish pool fund for travel and research prioritization (4) |
D |
| A national QPPP or QPR (2) |
D |
| A reference pavement (ability to develop delta) (3) |
D |
| Construction, Acceptance & Monitoring |
| Maintaining Quieter Pavements (3) |
A |
| Construction and construction acceptance (5) |
A,B |
| Construction issues are pretty universal recognized as causing variability (2) |
A |
| What is needed for communicating texture and material specs (i.e., ride model)? (0) |
A |
| Establish construction guidelines and best practices (14) |
A |
| Accelerated Testing |
| Couple accelerated pavement testing to include acoustical testing (2) |
B |
| Education (General public education and involvement) |
| "We need to be able to answer the public's questions about quiet pavement and annoyance" (5) |
C |
| A lot of complaints we are asked to address are coming from far from the pavement (<<67 dB). Perception of traffic noise at distance, particularly related to low frequency and perception (1) |
C |
| Learning gap: communicating spectra and understanding perception? Communicating connection between quantity and quality of sound (3) |
C |
| Educational tools for the public (a toolbox) (3) |
C |
| Can we educate the public about the difference between the interior and exterior sound? (1) |
C |
| Consistent terminology (7) |
C |
| Collecting psycho-acoustics literature related to highway noise (1) |
C |
| How perception metrics would be used (1) |
C |
| Miscellaneous |
| What is the real traffic noise problem? (2) |
All |
To provide Feedback, Suggestions or Comments for this page contact Mark Ferroni at Mark.Ferroni@dot.gov.
