Author: Michael D. Fontaine
Publisher:
ISBN:
Category : Automobile drivers
Languages : en
Pages : 87
Book Description
This report presents the results of a field implementation of credible, well-enforced, and highly publicized speed limits on two limited access highways in Virginia. The two locations studied were the US 29 bypass around Altavista, VA and the US 58/US 220 bypass around Martinsville, VA. At both of these locations, an engineering study recommended that the posted speed limit be increased from 55 mph to 65 mph. Virginia State Police provided an additional 40 hours per month of overtime enforcement on the study sections for 1 year at the Martinsville site and 15 months at the Altavista site. A public information and education (PI & E) campaign that consisted of media reports, informational handouts, and educational roadside signs was also implemented to try to increase compliance with the new posted speed limits. Before and after data on public perception, crash experience, and speed were analyzed to assess the impact of the program. The public perception survey results showed that the new 65 mph speed limits were well supported by the public, with over 80 percent agreeing with the new speed limits. The speed data analysis showed that the average speed increased by a statistically significant margin of 3 to 4 mph immediately after the new speed limit was implemented. Speeds remained constant following the implementation of the new speed limit, even after the increased enforcement and the education campaign ended. A speed analysis by vehicle type showed some minor variations in how vehicles responded to the changes in speed limit, enforcement, and PI & E. These differences were usually not very large, however. No negative safety impacts were observed during the evaluation. The overall number of crashes did not change by a statistically significant margin relative to historic trends, although the number of severe crashes at the Martinsville site did decline by a statistically significant amount and the crash rate at Altavista showed more than a 20 percent decline. Speed variance did not significantly change between the period with the 55 mph limit and the period with the 65 mph limit. This suggests that crash likelihood was not increased due to the increased posted speed limit. The coefficient of variation of the speeds decreased slightly following the increase in speed limit, potentially indicating that interactions between vehicles may have declined slightly. The demonstration proved to be a success, with the change in speed limit being well supported by the public. Strict compliance with the posted speed limits improved from 5 to 10 percent before the project began to between 45 and 50 percent. The percentage of drivers traveling 10 mph or more over the limit declined from over 20 percent to only 2 to 3 percent. Survey respondents reported that the roadside signs were noticed the most often of any PI & E effort used, likely due to the fact that both sites were located on through routes in rural areas.
Demonstration and Evaluation of Rational Speed Limits
Author: Michael D. Fontaine
Publisher:
ISBN:
Category : Automobile drivers
Languages : en
Pages : 87
Book Description
This report presents the results of a field implementation of credible, well-enforced, and highly publicized speed limits on two limited access highways in Virginia. The two locations studied were the US 29 bypass around Altavista, VA and the US 58/US 220 bypass around Martinsville, VA. At both of these locations, an engineering study recommended that the posted speed limit be increased from 55 mph to 65 mph. Virginia State Police provided an additional 40 hours per month of overtime enforcement on the study sections for 1 year at the Martinsville site and 15 months at the Altavista site. A public information and education (PI & E) campaign that consisted of media reports, informational handouts, and educational roadside signs was also implemented to try to increase compliance with the new posted speed limits. Before and after data on public perception, crash experience, and speed were analyzed to assess the impact of the program. The public perception survey results showed that the new 65 mph speed limits were well supported by the public, with over 80 percent agreeing with the new speed limits. The speed data analysis showed that the average speed increased by a statistically significant margin of 3 to 4 mph immediately after the new speed limit was implemented. Speeds remained constant following the implementation of the new speed limit, even after the increased enforcement and the education campaign ended. A speed analysis by vehicle type showed some minor variations in how vehicles responded to the changes in speed limit, enforcement, and PI & E. These differences were usually not very large, however. No negative safety impacts were observed during the evaluation. The overall number of crashes did not change by a statistically significant margin relative to historic trends, although the number of severe crashes at the Martinsville site did decline by a statistically significant amount and the crash rate at Altavista showed more than a 20 percent decline. Speed variance did not significantly change between the period with the 55 mph limit and the period with the 65 mph limit. This suggests that crash likelihood was not increased due to the increased posted speed limit. The coefficient of variation of the speeds decreased slightly following the increase in speed limit, potentially indicating that interactions between vehicles may have declined slightly. The demonstration proved to be a success, with the change in speed limit being well supported by the public. Strict compliance with the posted speed limits improved from 5 to 10 percent before the project began to between 45 and 50 percent. The percentage of drivers traveling 10 mph or more over the limit declined from over 20 percent to only 2 to 3 percent. Survey respondents reported that the roadside signs were noticed the most often of any PI & E effort used, likely due to the fact that both sites were located on through routes in rural areas.
Publisher:
ISBN:
Category : Automobile drivers
Languages : en
Pages : 87
Book Description
This report presents the results of a field implementation of credible, well-enforced, and highly publicized speed limits on two limited access highways in Virginia. The two locations studied were the US 29 bypass around Altavista, VA and the US 58/US 220 bypass around Martinsville, VA. At both of these locations, an engineering study recommended that the posted speed limit be increased from 55 mph to 65 mph. Virginia State Police provided an additional 40 hours per month of overtime enforcement on the study sections for 1 year at the Martinsville site and 15 months at the Altavista site. A public information and education (PI & E) campaign that consisted of media reports, informational handouts, and educational roadside signs was also implemented to try to increase compliance with the new posted speed limits. Before and after data on public perception, crash experience, and speed were analyzed to assess the impact of the program. The public perception survey results showed that the new 65 mph speed limits were well supported by the public, with over 80 percent agreeing with the new speed limits. The speed data analysis showed that the average speed increased by a statistically significant margin of 3 to 4 mph immediately after the new speed limit was implemented. Speeds remained constant following the implementation of the new speed limit, even after the increased enforcement and the education campaign ended. A speed analysis by vehicle type showed some minor variations in how vehicles responded to the changes in speed limit, enforcement, and PI & E. These differences were usually not very large, however. No negative safety impacts were observed during the evaluation. The overall number of crashes did not change by a statistically significant margin relative to historic trends, although the number of severe crashes at the Martinsville site did decline by a statistically significant amount and the crash rate at Altavista showed more than a 20 percent decline. Speed variance did not significantly change between the period with the 55 mph limit and the period with the 65 mph limit. This suggests that crash likelihood was not increased due to the increased posted speed limit. The coefficient of variation of the speeds decreased slightly following the increase in speed limit, potentially indicating that interactions between vehicles may have declined slightly. The demonstration proved to be a success, with the change in speed limit being well supported by the public. Strict compliance with the posted speed limits improved from 5 to 10 percent before the project began to between 45 and 50 percent. The percentage of drivers traveling 10 mph or more over the limit declined from over 20 percent to only 2 to 3 percent. Survey respondents reported that the roadside signs were noticed the most often of any PI & E effort used, likely due to the fact that both sites were located on through routes in rural areas.
An Evaluation of the 55 Mph Speed Limit Enforcement Demonstration Projects in Connecticut and Utah
Author: Terry M. Klein
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
Achieving Traffic Safety Goals in the United States
Author: National Academies (U.S.). Committee for the Study of Traffic Safety Lessons from Benchmark Nations
Publisher: Transportation Research Board
ISBN: 0309160650
Category : Business & Economics
Languages : en
Pages : 262
Book Description
The tool kit will vary among jurisdictions depending on basic legal constraints, community attitudes, road system and traffic characteristics, and resources. The Transportation Research Board (TRB) undertook a study to identify the sources of safety improvements in other countries. Researchers do not have a complete understanding of the underlying causes of long-term trends in crashes and fatalities. Differences among countries are in part attributable to factors other than government safety policies. To identify keys to success, the TRB study committee examined specific safety programs for which quantitative evaluations are available and relied on the observations of safety professionals with international experience. The committee's conclusions identify differences between U.S. and international practices that can account for some differences in outcomes. The committee recommendations, which are addressed to elected officials and to government safety administrators, identify actions needed in the United States to emulate the successes that other countries have achieved. The recommendations do not comprehensively address all aspects of traffic safety programs but rather address areas of practice that are highlighted by the international comparisons and for which credible evidence of effectiveness is available."--Pub. desc.
Publisher: Transportation Research Board
ISBN: 0309160650
Category : Business & Economics
Languages : en
Pages : 262
Book Description
The tool kit will vary among jurisdictions depending on basic legal constraints, community attitudes, road system and traffic characteristics, and resources. The Transportation Research Board (TRB) undertook a study to identify the sources of safety improvements in other countries. Researchers do not have a complete understanding of the underlying causes of long-term trends in crashes and fatalities. Differences among countries are in part attributable to factors other than government safety policies. To identify keys to success, the TRB study committee examined specific safety programs for which quantitative evaluations are available and relied on the observations of safety professionals with international experience. The committee's conclusions identify differences between U.S. and international practices that can account for some differences in outcomes. The committee recommendations, which are addressed to elected officials and to government safety administrators, identify actions needed in the United States to emulate the successes that other countries have achieved. The recommendations do not comprehensively address all aspects of traffic safety programs but rather address areas of practice that are highlighted by the international comparisons and for which credible evidence of effectiveness is available."--Pub. desc.
Department of Transportation and Related Agencies Appropriations for 2003: 2003 budget justifications
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1830
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1830
Book Description
Department of Transportation and Related Agencies Appropriations for 2003
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1898
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1898
Book Description
Federal Register
Author:
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 2264
Book Description
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 2264
Book Description
Departments of Transportation, Treasury, the Judiciary, Housing and Urban Development, and Related Agencies Appropriations for Fiscal Year 2007
Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on Transportation, Treasury, the Judiciary, Housing and Urban Development, and Related Agencies
Publisher:
ISBN:
Category : Courts
Languages : en
Pages : 1246
Book Description
Publisher:
ISBN:
Category : Courts
Languages : en
Pages : 1246
Book Description
Managing Speed
Author:
Publisher: Transportation Research Board
ISBN: 9780309065023
Category : Business & Economics
Languages : en
Pages : 444
Book Description
TRB Special Report 254 - Managing Speed: Review of Current Practices for Setting and Enforcing Speed Limits reviews practices for setting and enforcing speed limits on all types of roads and provides guidance to state and local governments on appropriate methods of setting speed limits and related enforcement strategies. Following an executive summary, the report is presented in six chapters and five appendices.
Publisher: Transportation Research Board
ISBN: 9780309065023
Category : Business & Economics
Languages : en
Pages : 444
Book Description
TRB Special Report 254 - Managing Speed: Review of Current Practices for Setting and Enforcing Speed Limits reviews practices for setting and enforcing speed limits on all types of roads and provides guidance to state and local governments on appropriate methods of setting speed limits and related enforcement strategies. Following an executive summary, the report is presented in six chapters and five appendices.
Departments of Transportation, Treasury, the Judiciary, Housing and Urban Development, and Related Agencies Appropriations for Fiscal Year ...
Author: United States. Congress. Senate. Committee on Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1204
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1204
Book Description
Evaluation of Variable Speed Limits in Work Zones
Author: Disapat Lavansiri
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 312
Book Description
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 312
Book Description