From Big Data to Speed and Safety: A Review of Surrogate Safety Measures Based on Speeds from Floating Car Data

In order to overcome biases of crash-based safety analyses, research is looking for surrogate safety measures (SSM). One potential SSM is speed from probe vehicles floating in traffic, which enable collecting data not limited in time and space. This paper summarises recent international knowledge on usefulness of speeds from floating car data (FCD) for safety monitoring and evaluation. It also discusses how well these compare with other known sources of speed, and concludes with the next steps needed for utilisation of FCD speeds in road safety.