Auckland Transport Safe Speeds, Auckland, New Zealand Case Study

Summary

Speeding, exceeding the posted speed limits, or traveling too fast for conditions was a contributing factor in almost 29 percent of all fatalities in 2021. Of the 42,939 fatalities that occurred on our Nation’s roadways that year, 12,330 were speeding-related—an increase of 7.9 percent from 2020 (Stewart 2023). Speed is fundamental in dictating injury risk for all road users in any crash, especially for vulnerable road users (VRUs) such as pedestrians and bicyclists (Corben 2020).

This is one of ten case studies accompanying the Safe System Approach for Speed Management Report. Read the full report here. 

Promoting Vision Zero: Case Study from Richmond, VA

Background

The City of Richmond, the capital of Virginia, is among the oldest cities in the U.S. The City formed a Safe and Healthy Streets Commission in 1966 as one of earliest multidiscipline initiatives of its kind in the nation and helped lay the groundwork for their Vision Zero plans and program.

Denver Department of Transportation and Infrastructure Vision Zero Rapid Response Program

Summary

This document highlights Denver’s Department of Transportation and Infrastructure (DOTI) Rapid Response program (RR Program or RR team) and shows how the program takes a systemic approach to safety and aligns with the Safe System principles to achieve Vision Zero in Denver.

City Of Bellevue, WA: Video Analytics Towards Vision Zero Program

Whitefish Bay, WI Community-Wide Safety Improvements

Strategic Speed Management Program – Austin, TX

Background

The City of Austin became a Vision Zero city in 2015 with the goal of zero traffic-related fatalities for this rapidly growing, diverse, and active community. Identifying a High Injury Network (HIN) exposed that the majority of fatal and serious injury crashes were occurring on collector and arterial streets. This perspective helped focus their program beyond neighborhoods and onto the more complex roadways which made up their HIN

Successful Strategies for Adoption of Safety Cameras – New York City, NY

Background

Speed is a persistent traffic safety issue; particularly in areas with high pedestrian and/or bike users. One effective enforcement strategy that has been utilized is Automated Speed Enforcement (ASE), more recently termed “safety cameras.”

However, agencies have often struggled with implementing safety cameras due to citizen concerns, legislative resistance, speeding not being perceived as a safety issue, and privacy issues. Implementation has also battled the perception that automated enforcement is a “money grab.”

Due to the high number of pedestrians and bicyclists, New York City (NYC) had a particular interest in the use of safety cameras. In 2013, pedestrian and bicyclist crashes accounted for 28 percent of all police reported crashes but made up 65 percent of fatalities in New York City. Additionally, unsafe speed was noted as a contributing factor in 7 percent of all crashes but accounted for 25 percent of fatal crashes.

New York City faced typical oppositions to safety cameras such as legislative restrictions and citizen resistance. They successfully instituted a safety camera program in school zones through several strategies.

Setting Credible Speed Limits – New Hampshire DOT

Background

New Hampshire DOT (NHDOT) is working to promote “reasonable and safe” speed limits for conditions and in a number of instances found that raising the existing speed limit was the appropriate solution.

Establishing and managing credible speed limits impacts safety. Community safety often suffers when we reduce speed limits in reaction to an event without considering the context and operations of the roadway. Educating the public one town or one highway segment at a time takes a lot of effort and it is not always received well. However, when explaining why a speed limit should fit the character of the roadway, the NHDOT has been pleasantly surprised by the number of people that seem to “get it.” (B. Lambert, interview with the author, December 30, 2019).

Consistent Speed Limits for Vulnerable Road Users – Examples from Various Agencies

Background

Speed limits are sometimes inconsistent within a jurisdiction for similar roadways. In some cases, this is because speed limits are applied to roadway sections based on characteristics which may not be obvious to the driver. For instance, speed limits on one roadway classified as a collector are set at 35 mph while another collector with similar characteristics is set at 30 mph due to a higher crash history. Since both appear similar to drivers, they are likely to apply the speed they believe is the most suitable to both roadways.

In other cases, as noted by “Methods and Practices for Setting Speed Limits: An Informational Report,” varying levels of experience, use of different procedures, as well as subjective procedures for determining speed limits can lead to inconsistencies in setting speed limits within or between jurisdictions. In either case, inconsistency violates driver expectancy and can lead to drivers disregarding speed limits.

Enforcing Roadways – City of Golden, CO

Background

Prior to improvement – South Golden Road was a very wide (80 foot) street to cross and consisted of four through lanes plus a center turn lane. The corridor was capable of handling the 20,000 vehicles per day, however, the frequent points of access from business and side streets created operational and safety issues. The half-mile section of South Golden Road included two signalized intersections at Johnson Road and Ulysses Street and two stop-controlled intersections at Lunnonhaus Drive and Utah Street. The corridor was experiencing a number of issues including speeding between intersections, traffic conflicts at intersections for vehicles, pedestrians, and bicycles, and significant delays especially at Utah Street. Prior to improvement, the posted speed limit was 35 mph and the measured 85th percentile speed was 48 mph. The corridor experienced an average of four crashes per month with at least one of these involving an injury.