There are four files containing the data displayed in the BITRE Congestion Report, three csv files and one geojson. The file containing route parameters can be found at the github repository at github.com/bitre-telematics/congestion.

The three files are:

route_metrics.csv: Containing summary data on each route, with the fields

route_name - name of route in report

min median travel time - the lowest median travel time (by hour) for the route

max median travel time - the highest median traveltime (by hour) for the route

Peak time to best ratio - The ratio of longest to shortest median time

min iq travel time - the interquartile range width for the hour in which is was most narrow

max iq travel time - the interquartile range width for the hour in which is was most wide

Peak iq to best ratio - the ratio of the widest to most narrow iq ranges

min median travel hour - the hour of day (from 0 to 23) when median travel times were least

max median travel hour - the hour of day (from 0 to 23) when median travel times were greatest

min iq travel hour - the hour of day for which the iq range was narrowest

max iq travel hour - the hour of day for which the iq range was greatest

total obvs - the number of vehicle observations used to calculate all time

Mean excess time ratio - the arithmetic mean of the ratio, by hour, of travel times to the best travel time

Mean excess time ratio - weighted - the arithmetic mean of the ratio, by hour, of travel times to the best travel time, weighted by observations in that hour - hour of the day (from 0 to 23)

Mean excess iq ratio - the arithmetic mean of the ratio, by hour, of iq ranges to the best iq range

Mean excess iq ratio - weighted - the arithmetic mean of the ratio, by hour, of iq ranges to the best iq range, weighted by observations in that hour

distance - the length of the route in metres

route_times.csv: Containing data for each hour, as graphed in the report, with the fields

route_name - name of route

hour - hour of the day (from 0 to 23)

LQ_est - the travel time at the lowest quartile of speeds (that is the upper quartile of travel times) in seconds

med_est - the travel time at the median travel speeds in seconds

UQ_est - the travel time at the upper quartile of speeds (that is the lower quartile of travel times) in seconds

LQ_est_char, med_est_char, UQ_est_char - the above but in human readable format

n_obvs - the number of vehicle observations used to caculate the speeds for that hour

segment_summary.csv: containing summaries of the segments and their speeds used to calculate travel times

route_name - the name of the route this data was generated for

osm_id - an Open Street Map unqiue indentifier, valid at least at time of publication. A segment may appear in more than one route.

hour - hour of day (from 0 to 23)

n_obvs - the number of vehicle observations available for that hour and segment. This may be 0 in some cases in which case alternate methods were used to assume a distribution of speeds

speed_limit - the speed limit. This report assumes all vehicles obey the speed limit. This was taken from OpenStreetMap where available and assumed based on road class and observed speed in others.

UQ - the upper quartile of speed (kph)

median - the median speed (kph)

LQ - the lower quartile of speed (sph)

distance - the distance traversed on this segment by the route - a segment may be used for different lengths on different routes

The file geometries.geojson contains only whole route geometries. Individual segments can be obtained from OpenStreetMap.

- Bureau of Infrastructure and Transport Research Economics
- Create Date: 17/12/2021
- Update Date: 16/12/2021
- License: Creative Commons Attribution 3.0 Australia
- Format: ZIP
- Download/Access URL: https://data.gov.au/data/dataset/444dc49a-780a-4c2a-840a-0a38cc4be635/resource/74b970cf-6616-4fe4-8cfb-a8a6fbc7ed42/download/2019-congestion-report-data.zip