Intelligent speed assistance in fleet management
Yahoodik, Sarah / Epstein, Alexander K / Herman, Arielle E. / Brodeur, Alyssa
Insurance Institute for Highway Safety
March 2026
Abstract
This report presents lessons derived from the experiences of 13 fleets and six stakeholders in deploying active intelligent speed assistance (ISA) in commercial fleets. Largely, fleets with active ISA found that ISA can meaningfully reduce speeding and associated safety risks and even promote cost savings. The two main motivations cited by fleets engaged in this study were safety, for drivers and other road users, and financial considerations, such as reducing speeding violations and improving safety scores that can influence insurance costs. Across fleets with active ISA, speeding and related violations declined, and most reported downstream safety benefits such as fewer hard-braking events or potentially longer following distances. Several fleets also noted improved scores from the Federal Motor Carrier Safety Administration’s Compliance, Safety, Accountability program as speed violations diminished and roadside inspections decreased. Indirect financial benefits were reported through reduced incident and maintenance costs. Overall, while most fleet managers reported that drivers were initially cautious towards ISA (due to concerns about loss of control, privacy, and driving safety), acceptance increased over time. Hands-on experience helped illustrate tangible benefits, such as reduced ticket risk and legal or disciplinary protections, and clarify ISA functionality. Most of the fleets installed aftermarket ISA devices and found that installations were typically quick and straightforward. The main challenge fleets reported was geofencing accuracy, particularly at points of speed-limit transitions such as on-ramps and work zones. However, most fleets said discrepancies were resolved within as little as 15 minutes and no more than 24 hours. Some fleets customized ISA parameters by, for example, adding buffers around speed limits and/or a temporary ISA override, to meet their operational needs. The best practices identified in this study can help additional fleets effectively implement active ISA. The recommended best practices include allowing drivers and fleet managers to experience ISA firsthand, developing baseline metrics when implementing ISA to quantify the benefits, providing training that clearly communicates the benefits of ISA and distinguishes it from other safety technologies, and starting small with a pilot.
This report presents lessons derived from the experiences of 13 fleets and six stakeholders in deploying active intelligent speed assistance (ISA) in commercial fleets. Largely, fleets with active ISA found that ISA can meaningfully reduce speeding and associated safety risks and even promote cost savings. The two main motivations cited by fleets engaged in this study were safety, for drivers and other road users, and financial considerations, such as reducing speeding violations and improving safety scores that can influence insurance costs. Across fleets with active ISA, speeding and related violations declined, and most reported downstream safety benefits such as fewer hard-braking events or potentially longer following distances. Several fleets also noted improved scores from the Federal Motor Carrier Safety Administration’s Compliance, Safety, Accountability program as speed violations diminished and roadside inspections decreased. Indirect financial benefits were reported through reduced incident and maintenance costs. Overall, while most fleet managers reported that drivers were initially cautious towards ISA (due to concerns about loss of control, privacy, and driving safety), acceptance increased over time. Hands-on experience helped illustrate tangible benefits, such as reduced ticket risk and legal or disciplinary protections, and clarify ISA functionality. Most of the fleets installed aftermarket ISA devices and found that installations were typically quick and straightforward. The main challenge fleets reported was geofencing accuracy, particularly at points of speed-limit transitions such as on-ramps and work zones. However, most fleets said discrepancies were resolved within as little as 15 minutes and no more than 24 hours. Some fleets customized ISA parameters by, for example, adding buffers around speed limits and/or a temporary ISA override, to meet their operational needs. The best practices identified in this study can help additional fleets effectively implement active ISA. The recommended best practices include allowing drivers and fleet managers to experience ISA firsthand, developing baseline metrics when implementing ISA to quantify the benefits, providing training that clearly communicates the benefits of ISA and distinguishes it from other safety technologies, and starting small with a pilot.
Abstract
This report presents lessons derived from the experiences of 13 fleets and six stakeholders in deploying active intelligent speed assistance (ISA) in commercial fleets. Largely, fleets with active ISA found that ISA can meaningfully reduce speeding and associated safety risks and even promote cost savings. The two main motivations cited by fleets engaged in this study were safety, for drivers and other road users, and financial considerations, such as reducing speeding violations and improving safety scores that can influence insurance costs. Across fleets with active ISA, speeding and related violations declined, and most reported downstream safety benefits such as fewer hard-braking events or potentially longer following distances. Several fleets also noted improved scores from the Federal Motor Carrier Safety Administration’s Compliance, Safety, Accountability program as speed violations diminished and roadside inspections decreased. Indirect financial benefits were reported through reduced incident and maintenance costs. Overall, while most fleet managers reported that drivers were initially cautious towards ISA (due to concerns about loss of control, privacy, and driving safety), acceptance increased over time. Hands-on experience helped illustrate tangible benefits, such as reduced ticket risk and legal or disciplinary protections, and clarify ISA functionality. Most of the fleets installed aftermarket ISA devices and found that installations were typically quick and straightforward. The main challenge fleets reported was geofencing accuracy, particularly at points of speed-limit transitions such as on-ramps and work zones. However, most fleets said discrepancies were resolved within as little as 15 minutes and no more than 24 hours. Some fleets customized ISA parameters by, for example, adding buffers around speed limits and/or a temporary ISA override, to meet their operational needs. The best practices identified in this study can help additional fleets effectively implement active ISA. The recommended best practices include allowing drivers and fleet managers to experience ISA firsthand, developing baseline metrics when implementing ISA to quantify the benefits, providing training that clearly communicates the benefits of ISA and distinguishes it from other safety technologies, and starting small with a pilot.Speed: Speed limits and speeding, ID: 2357