ATR Overview

Automatic Traffic Recorder (ATR) sites and weekly count summaries for traffic volumes, speeds, and vehicle mix across the network.

Explore ATR Sites Sample ATR Site Detail

Snapshot

KPI Tiles

Latest snapshot with coverage and freshness context.

Last refreshed: 2025-12-26 03:38 UTC

505

Total ATR sites

437

Active ATR sites

486

Sites with weekly summary data

2.5%

Active sites with usable week in last 4 weeks

188

Median age of latest usable week (days)

11

Sites with usable data in last 4 weeks

12289

Latest AWDT (weekday avg daily traffic, two-way)

9728

Latest AWEDT (weekend avg daily traffic, two-way)

5.9%

Latest heavy vehicle share (weekday, two-way)

Heavy vehicles / classified volume, mean across sites

76

Latest 85th percentile speed (weekday, worst direction)

11.4%

Latest % over posted +20 (weekday, worst direction)

Availability

Data Availability (Last 10 Years)

Site-day and usable week coverage (QA A/B, 3+ usable days) within the last 10 years.

Window start: 2016-02-23

57122

Total site-days available

7868

Total usable site-weeks available

Counts by year

Year	Site-days	Usable site-weeks	Distinct sites
2025	6867	981	432
2024	8725	1246	431
2023	7404	1034	406
2022	7140	994	403
2021	7290	1014	408
2020	2689	374	400
2019	6545	907	379
2018	3612	457	299
2017	3543	447	295
2016	3307	414	287

Newest counts

Recent week ending	2025-10-28
Sites reporting	8
Usable site-weeks	8

Trends

Monthly Trends (Last 10 Years)

Monthly network trends (mean across sites with QA A/B and at least 3 usable days).

Weekday AWDT

Weekday heavy vehicle share

% over posted +20 (worst direction)

Tooltip shows the number of contributing sites for each monthly point.

Map

Map Snapshot

Latest-week site snapshot with a simple mode switch.

Latest-week map

Map mode

Rankings

Top Tables

Ranked highlights from the latest available week (placeholders).

Top sites by AWDT

Site	Latest AWDT	Latest week end
3109 Westney Rd S (R.R.31) 300 m N of Fairall St	44553	2025-09-28
4103 Salem Rd S (R.R.41) 200 m S of Mandrake St/Chambers Dr	42447	2025-09-19
0116 Brock Rd (R.R.1) 200 m S of Highway 401 EB Ramps	41031	2025-08-16
4101 Salem Rd S (R.R.41) 200 m S of Kingston Rd (RHwy2)	40101	2025-09-19
3105 Westney Rd S (R.R.31) 200 m S of Bramwell Dr	40098	2025-09-19
0419 Taunton Rd (R.R.4) 150 m E of Fallingbrook St	40061	2025-07-16
0417 Taunton Rd (R.R.4) 200 m E of Anderson St (R.R.36)	38673	2025-07-16
0407 Taunton Rd (R.R.4) 200 m E of Thickson Rd (R.R.26)	38142	2025-07-16
0405 Taunton Rd (R.R.4) 200 m E of Cochrane St	36855	2025-07-16
0406 Taunton Rd. (R.R.4) 300 m. E. of Riverwood St./ McKinney Dr. - INACTIVE	36753	2012-09-20

Top sites by severe speeding

Site	% over posted +20	Latest week end
0104 Brock Rd (R.R.1) 200 m N of Central St/Ninth Concession Rd (R.R.5)	96.7% worst dir SB	2025-07-24
0509 Raglan Rd. W. (R.R.5) 275 m. E. of Stevenson Rd. N. - INACTIVE	87.4% worst dir SB	2020-11-13
0510 Raglan Rd W (R.R.5) 275 m W of Stevenson Rd N	81.0% worst dir WB	2025-08-25
0505 Myrtle Rd (R.R.5) 200 m E of Highway 7/12	77.7% worst dir EB	2025-07-29
1608 Ritson Rd N (R.R.16) 400 m N of Darcy St	76.9% worst dir SB	2025-07-09
1305 Zephyr Rd (R.R.13) 450 m E of Concession 3 (East Limit of Zephyr)	73.7% worst dir EB	2025-08-28
0240 Simcoe St (R.R.2) 100 m N of Stone Sound	73.1% worst dir SB	2025-08-16
1606 Ritson Rd N (R.R.16) 80 m N of Beatrice St E	72.0% worst dir SB	2025-08-16
7415 Regional Highway 47 475 m W of Goodwood Rd (R.R.21)	71.2% worst dir EB	2025-04-30
0202 Simcoe St (R.R.2) 200 m N of Highway 7 (Manilla)	68.9% worst dir NB	2025-09-17

Most stale sites

Site	Latest week end	Status
1306 Regional Rd. 13 550 m. E. of Lake Ridge Rd. (R.R.23) - INACTIVE	2005-10-18	Inactive
1902 Shirley Rd. (R.R.19) 500 m. W. of Old Scugog Rd. - INACTIVE	2005-10-20	Inactive
0808 Reach St. (R.R.8) 450 m. E. of Lake Ridge Rd. (R.R.23) - INACTIVE	2005-10-20	Inactive
6201 Harbour Rd. (formerly R.R.62) 300 m. W. of Farewell St. (R.R.56) - INACTIVE	2005-11-08	Inactive
2218 Bloor St. W. (R.R.22) 100 m. W. of Highway 401 EB Off Ramp (416) - INACTIVE	2005-11-08	Inactive
5402 Park Rd. S. (R.R.54) 100 m. N. of Highway 401 WB Ramp (REMOVED) - INACTIVE	2010-10-13	Inactive
0310 Regional Rd. 3 425 m. E. of Enfield Rd. (R.R.34) - INACTIVE	2011-09-13	Inactive
0404 Taunton Rd. E. (R.R.4) 200 m. E. of Wilson Rd. (R.R.35) - INACTIVE	2012-07-17	Inactive
3804 Whites Rd. (R.R.38) 200 m. N. of Strouds La. - INACTIVE	2012-09-12	Inactive
3106 Westney Rd. S. (R.R.31) 200 m. N. of Bayly St. W. (R.R.22) - INACTIVE	2012-09-12	Inactive

Biggest movers

Site	Metric	Week-over-week change
2815 Peter Matthews Drive (R.R.28) 300 m N of Taunton Rd (R.R.4)	Weekday AWDT change	+24972 veh/day
3105 Westney Rd S (R.R.31) 200 m S of Bramwell Dr	Weekday AWDT change	+13027 veh/day
0416 Taunton Rd E (R.R.4) 380 m W of Lake Ridge Rd N (R.R.23)	Weekday AWDT change	-12418 veh/day
3104 Westney Rd N (R.R.31) Immediately S of Rossland Rd	Weekday AWDT change	+12348 veh/day
0407 Taunton Rd (R.R.4) 200 m E of Thickson Rd (R.R.26)	Weekday AWDT change	+11672 veh/day
5711 Bowmanville Av (R.R.57) 200 m S of Regional Highway 2/King St W	P85 speed change (SB)	+50 km/h
1703 North St (R.R.17) 500 m S of Concession Rd 3 (E of Hwy 35/115)	P85 speed change (NB)	-35 km/h
5808 Manning Rd (R.R.58) 50 m E of Brock St N	P85 speed change (WB)	-35 km/h
0215 Simcoe St S (R.R.2) 200 m S of Wentworth St (R.R.60)	P85 speed change (NB)	-30 km/h
0214 Simcoe St S (R.R.2) 25 m S of Fisher St	P85 speed change (SB)	-30 km/h

Quality

Data Quality & Transparency

QA summaries, usable day coverage, and key caveats for interpreting network metrics.

QA and completeness summary

Reporting window (count days): 2005-04-27 to 2025-10-28 Total days: 70285

QA grade	Days	Share
A (best)	70035	99.6%
B	250	0.4%
C	0	0.0%
D (lowest)	0	0.0%
No grade	0	0.0%

Volume coverage	Days	Share
>= 0.90	70285	100.0%
0.75 to < 0.90	0	0.0%
0.50 to < 0.75	0	0.0%
< 0.50	0	0.0%
Missing	0	0.0%

Usable days (QA A/B): 70285 of 70285 (100.0%)
Unknown speed bins (speed=999): present in 6163 of 7626 weeks with speed data (80.8%)
Latest-week coverage across sites: oldest 2005-10-18, newest 2025-10-28

Definitions & Caveats

Usable day: a count day with QA grade A or B.
QA grades: daily data quality checks; A is best, D is lowest.
Weak comparisons: week-over-week and same-season deltas are suppressed or labeled when either week has fewer than 3 usable days or QA below A/B.
Heavy vehicles: defined by a configurable mapping (default codes 6-13), so shares reflect policy choices.
Unknown speeds: speed bin 999 is treated as unknown and excluded from percentile and speeding metrics; missing posted speeds can yield null or understated rates.