The Effect of Increased Speed Limits in the Post-NMSL Era
The Effect of Increased Speed Limits in the Post-NMSL Era

Author: Donald C. Bischoff

Publisher:

Published: 1998-06-01

Total Pages: 80

ISBN-13: 9780788176210

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The National Highway System (NHS) Designation Act of 1995 established the National Highway System & eliminated the Federal mandate for the National Maximum Speed Limit (NMSL). The NHS Act required the Secretary of Transportation to study the impact of states' actions to raise speed limits above 55/65 MPH & report to the Congress. This report includes background on speed limits; assessing the impact of increased speed limits on traffic crashes; synopsis of studies by individual states; discussion/recommendations; detailed information on individual state speed limit legislation; & Federal Register notices.

The Life-saving Benefits of the 55 Mph National Speed Limit
The Life-saving Benefits of the 55 Mph National Speed Limit

Author:

Publisher:

Published: 1980

Total Pages: 26

ISBN-13:

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An update is provided of key legislative changes that have taken place concerning the fifty-five miles-per-hour National Maximum Speed Limit (NMSL). Summary statistics through the 1978 time period are followed by summaries of the literature reviewed on the benefits of the NMSL. An annotated bibliography of 16 studies represents various points of view and interests of the traffic safety community, and a supplementary list of references is provided. Findings of the Task Force are presented with the range of estimates for conclusions drawn. Since the 1973-4 decreases in fatalities, travel, and speed, there have been small increases for 1976-8, but the level of fatalities has not returned to pre-55 mph NMSL levels. In spite of a shortage of reliable data, it was concluded that 20,000 to 30,000 lives were saved in the 1974-1978 period.

Impact of New Speed Limits on Kansas Highways
Impact of New Speed Limits on Kansas Highways

Author: Yacoub M. Najjar

Publisher:

Published: 2000

Total Pages: 68

ISBN-13:

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On November 28, 1995, the National Highway System (NHS) Designation Act abolished the federal mandate for the National Maximum Speed Limit (NMSL) and returned the authority of establishing speed limits to the states. By the end of 1996, 32 states had passed laws to raise speed limits on various highways. Accordingly, Kansas' law increased speed limits on most of its highways in March 1996. The detailed research study reported herein concentrated on analyzing the before and after Kansas speed and accident databases. In regard to speed analysis, the t-test was applied to investigate whether significant increases in 85th percentile speeds were noted during the after period on both interstate and 2-lane rural highways.