What is the Gera Traffic Pressure Index for Suffolk?

Suffolk scores 4.3/10 on the Gera Traffic Pressure Index (GTPI) as of 2025 (rank 25 of 153 English local authorities, moderate pressure). That is 0.8 points above the national average of 3.4/10. GTPI combines 10-year AADF growth, HGV share, and count-point density.

What is the HGV freight share on roads in Suffolk?

In 2025, heavy goods vehicles (HGVs) accounted for 7.1% of all motor vehicle traffic monitored in Suffolk (270 DfT count points). The national range across English local authorities is 1.4% to 13.1%. Source: DfT AADF count-point CSV, OGL v3.0.

Has traffic in Suffolk grown over the past 10 years?

Average daily traffic in Suffolk has grown by 11.9% between 2014 and 2025, comparing average AADF across 270 count points. Source: DfT AADF count-point CSV, OGL v3.0.

What does the Gera Traffic Pressure Index measure?

The GTPI/10 is a per-local-authority score combining three DfT data signals: (1) 10-year average daily flow (AADF) growth trend (weight 40%), (2) HGV freight share of total motor traffic (35%), (3) count-point density per 100km of road network (25%). Each sub-score is min-max normalised across all 153 English local authorities. Banded as: Very Low <2.5, Low 2.5–4.0, Moderate 4.0–5.5, High 5.5–7.0, Very High ≥7.0. Full methodology at https://gerarent.com/methodology/gera-traffic-pressure-index.

Road traffic pressure in Suffolk

East of England · ONS code E10000029

What is the road traffic pressure in Suffolk?

Suffolk scores 4.3/10 on the Gera Traffic Pressure Index (rank 25 of 153 English local authorities, moderate pressure), with AADF traffic growing by 11.9% since 2014. HGV freight accounts for 7.1% of motor traffic. Source: DfT Road Traffic Statistics 2025, OGL v3.0. Proprietary index: GeraRent.

Proprietary metric:Gera Traffic Pressure Index (GTPI/10)·As of 2025 · updated annually (last: 2026-06-20)

4.3/ 10

Gera Traffic Pressure Index — Suffolk

Rank 25 of 153 English local authorities · 0.8 points above the national average of 3.4/10

Moderate pressure

Road traffic data — Suffolk

Gera Traffic Pressure Index data for Suffolk
Metric	Value	Source
Gera Traffic Pressure Index (GTPI/10)	4.3/10	GeraRent (computed)
Pressure band	Moderate	GeraRent (banded)
HGV share of motor traffic (2025)	7.1%	DfT AADF 2025
10-year AADF traffic change	+11.9%	DfT AADF 2014 vs 2025
Count points monitored	270	DfT count_points 2025
Average AADF (all motor vehicles)	14,387	DfT AADF 2025
Count-point density (per 100km road)	4.0	DfT count_points / LA traffic
Road network length (km)	6,812	DfT local_authority_traffic

HGV share and AADF figures from DfT road traffic count-point data. Every figure is real official government data — only the composite GTPI is Gera's. Full methodology.

GTPI sub-score breakdown

Traffic growth trend (40%)6.2/10

+11.9% since 2014

HGV freight share (35%)4.9/10

7.1%

Count-point density (25%)0.2/10

4.0 per 100km

Traffic pressure estimator — Suffolk

Compare Suffolk's GTPI against the national range and see illustrative commute delay estimates at different pressure levels.

Adjust the GTPI slider or commute distance to see personalised estimates for Suffolk. Based on DfT AADF data and congestion-speed research benchmarks.

Gera Traffic Pressure Index (GTPI/10)Suffolk actual: 4.3/10

1.0 (Very Low)4.3/107.5 (Very High)

Daily commute distance (km, one way)

2 km10 km50 km

Moderate pressure — GTPI 4.3/10

Moderate traffic pressure. Road usage is broadly in line with the national average — neither the least nor the most congested part of England.

+24%

vs national avg (3.4/10)

7.1%

HGV share of traffic

14,387

avg daily flows (AADF)

Illustrative peak-hour delay estimate — 10 km commute

+1 min/day

At GTPI 4.3/10, peak urban speeds are estimated to drop by up to 8% from free-flow pace for a 10 km journey. Illustrative only — actual delays vary by road type, time of day, and route.

GTPI values from DfT Road Traffic Statistics (Suffolk latest year AADF data), OGL v3.0. Congestion-speed estimates are illustrative benchmarks derived from published DfT and TfL research; they are not real-time traffic data. Use this tool to compare areas, not to plan individual journeys.

Suffolk road traffic — questions and answers

What is the Gera Traffic Pressure Index for Suffolk?: Suffolk scores 4.3/10 on the Gera Traffic Pressure Index (GTPI) as of 2025 (rank 25 of 153 English local authorities, moderate pressure). That is 0.8 points above the national average of 3.4/10. GTPI combines 10-year AADF growth, HGV share, and count-point density.
What is the HGV freight share on roads in Suffolk?: In 2025, heavy goods vehicles (HGVs) accounted for 7.1% of all motor vehicle traffic monitored in Suffolk (270 DfT count points). The national range across English local authorities is 1.4% to 13.1%. Source: DfT AADF count-point CSV, OGL v3.0.
Has traffic in Suffolk grown over the past 10 years?: Average daily traffic in Suffolk has grown by 11.9% between 2014 and 2025, comparing average AADF across 270 count points. Source: DfT AADF count-point CSV, OGL v3.0.
What does the Gera Traffic Pressure Index measure?: The GTPI/10 is a per-local-authority score combining three DfT data signals: (1) 10-year average daily flow (AADF) growth trend (weight 40%), (2) HGV freight share of total motor traffic (35%), (3) count-point density per 100km of road network (25%). Each sub-score is min-max normalised across all 153 English local authorities. Banded as: Very Low <2.5, Low 2.5–4.0, Moderate 4.0–5.5, High 5.5–7.0, Very High ≥7.0. Full methodology at https://gerarent.com/methodology/gera-traffic-pressure-index.

Other East of England local authorities

See the full national Gera Traffic Pressure Index ranking, or explore overall liveability scores including schools, safety, and broadband.

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Source: DfT Annual Average Daily Flow (AADF) count-point data (dft_traffic_counts_aadf.zip, 270 count points in 2025), DfT local authority road traffic estimates, DfT count point locations. All published at roadtraffic.dft.gov.uk/downloads. Open Government Licence v3.0. The Gera Traffic Pressure Index is computed by GeraRent; full methodology at /methodology/gera-traffic-pressure-index.