Retail

Food stores and small supermarkets.

A new food store brings regular customer traffic and articulated delivery lorries. We assess the trips properly and design an access and car park that work at the busiest times.

Main guide: Transport Assessments

Discount food stores and small supermarkets are among the most common retail applications. The highway authority will look closely at the access, the car park and how the store is serviced.

01

What the council focuses on

Trips at the Friday evening and Saturday peaks, the capacity of the access and nearby junctions, car park layout and queuing, HGV servicing, and safe walking and cycling routes from surrounding homes.

02

The evidence that answers it

  • Trip generation using TRICS for comparable stores, with pass-by and diverted trips.
  • Junction capacity modelling where flows justify it.
  • Car park layout, parent and child and accessible bays, and EV charging.
  • Swept paths for articulated delivery vehicles.
  • A Travel Plan for staff.
03

Getting the trip forecast right

Much of a food store’s traffic is already on the road network, either passing the site or diverted from another shop. Showing this properly avoids overstating the effect on junctions.

04

What the application usually needs

  • A Transport Statement or Assessment with trip generation and distribution.
  • Junction assessments where the network is busy.
  • Access design with visibility and swept paths for articulated lorries.
  • Car park layout, including accessible and parent bays and EV charging.
  • A Travel Plan for staff.
05

A typical case

A typical case is a discount food store on the edge of a town, replacing a vacant industrial unit. The council asks about Saturday peak traffic and the effect on a nearby roundabout. We use TRICS for comparable stores, allow for pass-by and diverted trips, compare with the existing use, and model the roundabout for the busiest hours. The access is designed for an articulated delivery vehicle with a separate servicing route.

06

Technical points

Food stores peak on Friday evenings and Saturdays, often at different times from the commuter peaks. Trip rates should match the type of store, because a discount store and a large supermarket behave differently. Where junction modelling is needed, we agree the junctions and peak hours with the highway authority at scoping. Servicing yards need space for articulated lorries to turn and reverse onto the dock without crossing customer areas.

07

If highways raise concerns

Concerns usually relate to junction capacity at peak times, the access design and HGV servicing. Agreeing the assessment scope early, including which junctions to model and which peak hours to use, avoids most later disputes.

Where modelling results are questioned, we review the inputs with the highway authority and test sensitivity cases. If needed, we support an appeal.

08

How we help

We scope and prepare the Transport Assessment, model the junctions where needed, and design the access and servicing arrangements.

The same questions arise in Scotland and Wales, where they are assessed against NPF4 and Scottish guidance or Planning Policy Wales and TAN 18 rather than the NPPF.

To get a quote, send us:

  • The site address or a location plan.
  • The proposed floor area, car park size and operator, if known.
  • Any scoping or pre-application comments from the highway authority.
  • Any pre-application advice or highways comments you already have.
FAQ

Questions we get asked

Does a food store need a Transport Assessment?

Larger stores usually do. Smaller ones may need a Transport Statement. We agree the scope with the highway authority.

What are pass-by trips?

Trips by people already driving past the site who stop on the way. They add little to traffic on the road.

When are food stores busiest?

Usually Friday evening and Saturday. We assess these peaks alongside weekday commuter hours.

Will the council ask for junction modelling?

Where nearby junctions are busy, often yes. We use industry-standard software for this.

How are delivery lorries accommodated?

With a servicing yard and swept paths for articulated vehicles, kept separate from customer areas where possible.

Related

Related guidance.

All insights

Related services: Transport Assessments · Junction modelling · Access junction design.

Guidance and sources
  1. GOV.UK: National Planning Policy FrameworkEngland. National policy on transport in planning decisions.
  2. GOV.UK: Travel Plans, Transport Assessments and StatementsEngland. Planning guidance on proportionate transport evidence.

Sources checked 8 November 2026. General information, not advice on a specific site.

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