Annual Quarter-Hourly Speed Profiles

Overview

The quarter-hourly speed profile table contains information about the average observed speed per network link, provided in quarter-hourly buckets for a typical week. This data is updated annually. Data is available for download in CSV format.

See what coverage we have in specific areas here.

Highway	Quarter-hourly speed profile % Coverage in 2025 data Percentage of segments providing speed values for over 2/3 of quarter-hour buckets
Motorway	99%
Trunk	99%
Primary	99%
Secondary	98%
Tertiary	89%
Residential	37%
Other	21%

Sample Download

Click here to download a sample of Replica's quarter-hourly speed profile per network link table.

Schema

Field name	Content Type	Sample Value	Description
stable_edge_id	String	6544473848226082043	A unique identifier for each road segment.
osm_id	String	5149900	OSM Way ID (version 2021-09-01 for the 2021 data; version 2022-12-01 for the 2022 data)
street_name	String	Scenic Avenue	The common name of the network link if available. Matches the name assigned by OpenStreetMap.
highway	String	secondary_link	The classification of the link based on OpenStreetMap data if available.
length	Float	29.46	The length of the network link in meters.
lanes	Integer	2	The number of lanes in the network link.
heading	Integer	121	The heading of the network link.
compass_direction	String	SW	The compass direction of the network link.
geometry	String	LINESTRING(-122.279327301964 37.8109962748959, -122.279142155032 37.8109143185075, -122.279041013398 37.8108588116808)	The geometry of the network link.
speed_limit_mph	Integer	45	Speed limit of the network link in miles per hour.
free_flow_speed_mph	Integer	48	Free-flow speed for the network link in miles per hour.
mon_0, mon_1...mon_95	Float	66.2	One column per quarter hour. The value in each column represents the speed on the network link in the quarter-hour bucket. Buckets are expressed as 0-95 and are counted from midnight. If a specific day of the week is chosen for download, the column names will reflect the day of week (e.g. mon_0, tue_0, wed_0). If an "Average Weekday" or "Average Weekend Day" is selected for download, the columns will be named wkdy_0...wkdy_95 and wknd_0...wknd_95 respectively. The average weekday values are averaged over Monday to Friday; the average weekend values are averaged over Saturday and Sunday.

Quality Metrics and Methodology

Read about the Quality Metrics and Methodology on the overview page for Replica's Annual Speeds Data.