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Speed Feedback Signs Manage to Reduce Mean Speed by up to 2.9 km/h in European Urban Environment.

Content references source material no longer available at its original location.

For the study, speed display signs were installed along busy and quiet streets in two Finnish cities. Each of these signs displayed the driver’s speed and a graphic symbol that varied…

Content type

Benefit

Date Posted

11/24/2020

Taxonomy (ARC-IT) Speed Warning and Enforcement (TM17), Infrastructure-Based Traffic Surveillance (TM01), Integrated Decision Support and Demand Management (TM09)

Geolocation links

Finland

Increase in automatic speed enforcement camera coverage in Finland resulted in a benefit-cost ratia of 3.91 and over $15 million in annual safety benefits.

MethodologyThe Finnish Road Administration conducted an analysis of costs and benefits of additional enforcement. Multiplying expected annual reductions in injuries (15) and deaths (4) by the…

Content type

Benefit

Date Posted

12/19/2014

Taxonomy (ARC-IT) Speed Warning and Enforcement (TM17)

Geolocation links

Finland

Field data collected over the last two decades show variable speed limit (VSL) systems can reduce crash potential by 8 to 30 percent.

FINDINGS The data below excerpted from Table-1 of the source report highlights findings from the literature search. Type of Test Location Major Findings Field…

Content type

Benefit

Date Posted

12/07/2012

Taxonomy (ARC-IT) Incident Scene Safety Monitoring (PS07), In-Vehicle Signage (TI07), Dynamic Roadway Warning (TM12), Autonomous Vehicle Safety Systems (VS01), Reduced Speed Zone Warning / Lane Closure (VS09), Variable Speed Limits (TM20)

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Mandatory dynamic automatic controlling Intelligent Speed Assistance (ISA) could reduce fatal crashes over the entire road network by more than 50 percent, whereas static informing ISA could still give a reduction of almost 20 percent.

FINDINGSThe role of in-car speed assistance systems can gradually become more prominent in speed management, in combination with traditional measures (infrastructural engineering, education,…

Content type

Benefit

Date Posted

05/06/2011

Taxonomy (ARC-IT) Autonomous Vehicle Safety Systems (VS01), Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15), Automated Vehicle Operations (VS16), Eco-Approach and Departure at Signalized Intersections (ST08)

Geolocation links

Mandatory dynamic automatic controlling ISA (Intelligent Speed Assistance) could reduce fuel consumption and harmful emissions by 4 to 11 percent.

FINDINGS The role of in-car speed assistance systems can gradually become more prominent in speed management, in combination with traditional measures (infrastructural engineering, education,…

Content type

Benefit

Date Posted

05/06/2011

Taxonomy (ARC-IT) Freight Administration (CVO02), Eco-Approach and Departure at Signalized Intersections (ST08), Autonomous Vehicle Safety Systems (VS01)

Geolocation links

In Finland, a benefit-cost analysis supported the deployment of weather information controlled variable speed limits on highly trafficked road segments.

RESULTSOverall, the results of the benefit-cost analysis were favorable for deployments along highly trafficked road segments. Starting (low-end) benefit-to-cost ratios ranged from 1.1:1 to 1.9:1.…

Content type

Benefit

Date Posted

05/20/2008

Taxonomy (ARC-IT) Infrastructure-Based Traffic Surveillance (TM01), Integrated Decision Support and Demand Management (TM09), Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Weather Data Collection (WX01), Infrastructure Monitoring (MC09), Variable Speed Limits (TM20)

Geolocation links

Finland

In Finland, the average implementation cost for a weather responsive roadside VSL system on a dual carriageway was estimated at 80,000€; average maintenance costs (including replacement costs) were estimated at 3,500 €/km/year.

In Finland, approximately 350 km of roadway have been equipped with variable speed limits—most of them are weather-controlled. This study estimated the benefits and costs of expanding the system.…

Content type

System Cost

Made Public Date

04/28/2008

Geolocation links

Finland

Based on information from 18 agencies worldwide, the costs of real-time bus arrival information systems vary depending on AVL technology, fleet size, and provisioning of real-time information.

This TCRP synthesis report presents information on the state of the practice in real-time bus arrival information systems based on literature research and survey of transit agencies in the United…

Content type

System Cost

Made Public Date

06/01/2004

Taxonomy (ARC-IT) Transit Traveler Information (PT08), Transit Vehicle Tracking (PT01)

Geolocation links

Study reports automated speed enforcement system costs 5.9 million euros in Denmark and 178,000 euros in Finland.

This study provides an overview of CERTU research on speed and automated enforcement implemented in Europe, Australia, and North America. The study outlined issues associated with data treatment and…

Content type

System Cost

Made Public Date

09/30/2003

Taxonomy (ARC-IT) Speed Warning and Enforcement (TM17)

Geolocation links

Denmark | Finland

Simulation of a transit signal priority system in Helsinki, Finland indicated that fuel consumption decreased by 3.6 percent, Nitrogen oxides were reduced by 4.9 percent, Carbon monoxide decreased by 1.8 percent, hydrocarbons declined by 1.2 percent,

FINDINGSFuel Consumption and EmissionsSimulations were used to evaluate fuel consumption and emissions for buses before and after system deployment. The calculations considered the average total…

Content type

Benefit

Date Posted

02/25/2002

Taxonomy (ARC-IT) Transit Traveler Information (PT08), Transit Vehicle Tracking (PT01), Transit Signal Priority (PT09)

Geolocation links

Helsinki, Finland

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Speed Feedback Signs Manage to Reduce Mean Speed by up to 2.9 km/h in European Urban Environment.

Increase in automatic speed enforcement camera coverage in Finland resulted in a benefit-cost ratia of 3.91 and over $15 million in annual safety benefits.

Field data collected over the last two decades show variable speed limit (VSL) systems can reduce crash potential by 8 to 30 percent.

Mandatory dynamic automatic controlling Intelligent Speed Assistance (ISA) could reduce fatal crashes over the entire road network by more than 50 percent, whereas static informing ISA could still give a reduction of almost 20 percent.

Mandatory dynamic automatic controlling ISA (Intelligent Speed Assistance) could reduce fuel consumption and harmful emissions by 4 to 11 percent.

In Finland, a benefit-cost analysis supported the deployment of weather information controlled variable speed limits on highly trafficked road segments.

In Finland, the average implementation cost for a weather responsive roadside VSL system on a dual carriageway was estimated at 80,000€; average maintenance costs (including replacement costs) were estimated at 3,500 €/km/year.

Based on information from 18 agencies worldwide, the costs of real-time bus arrival information systems vary depending on AVL technology, fleet size, and provisioning of real-time information.

Study reports automated speed enforcement system costs 5.9 million euros in Denmark and 178,000 euros in Finland.

Simulation of a transit signal priority system in Helsinki, Finland indicated that fuel consumption decreased by 3.6 percent, Nitrogen oxides were reduced by 4.9 percent, Carbon monoxide decreased by 1.8 percent, hydrocarbons declined by 1.2 percent,

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