How is road speed journey time data allocated to roads or streets?
Journey time speed data using road classifications
For a broad-brush approach to network planning or to calculate large scale journey time catchments, the simplest road classification speeds are suitable. This ensures major roads are faster than minor ones. However, roads in an urban area may be slower than those of the same class outside a city, so MapMechanics standard speed data for journey time calculation also include variations between urban and rural roads.
INRIX GPS signal journey time data from real vehicles on the move
MapMechanics pioneered the allocation of INRIX (formerly known as ITIS data in the UK) speeds to road networks from millions of GPS signals recorded from real journeys, to create off-the-shelf journey time speed data for GIS, vehicle routing and scheduling, and map analysis use. The technical team continue to enhance the technique and now we offer journey time data with INRIX speeds for different times of day and different vehicle types, created from billions of signals and attached to every link in a digital map. The GPS data is originated by the traffic information specialist INRIX, then processed by MapMechanics and allocated to different networks (e.g. NAVTEQ GB street products, AA road data or Ordnance Survey ITN mapping) to create a range of journey time data products. Speeds processed from INRIX data are also used in other popular packages across the world and are available with PC*Miler for USA and Canada, for example.
Journey time traffic pattern data
Like the sound of journey time speeds captured from GPS, but INRIX data unavailable for your region? MapMechanics can supply NAVTEQ Traffic Pattern data for many countries around the globe. This product also uses GPS information to indicate the likely journey time speed range on a road link. It is developing rapidly and currently allocates journey time speeds to all road types (classes 1-5) in most of Western Europe and Australia and provides the journey time speed details for the highest available road classifications in other countries.
Your own journey time data and journey experience
Does your organisation have preferred routes, do you always direct your fleet to travel along major roads even if a minor road looks shorter, are your heavy vehicles normally 10% slower? Do you need journey time speed files reflecting seasonality or day of the week? MapMechanics can work with you to create journey time speed data files that reflect the way your business works.
Need street or road data to attach your speed information to?
Find out more about which data is most appropriate for your particular journey time or routing scenario at allmapdata.com