How do I separate business rail travel from an employee's regular commute?

Only include journeys taken for a specific work purpose, such as visiting a client or attending a conference — routine travel between home and the employee's usual workplace belongs under employee commuting instead.

Does a season ticket used for both commuting and business trips need splitting?

Yes, apportion the ticket cost or distance between the two categories based on how it's actually used, rather than assigning the whole ticket to one category.

Are international rail journeys, such as Eurostar, treated differently from domestic rail?

No, the same Scope 3 Category 6 treatment applies; select the international rail subtype where available so the correct route-based factor is applied.

What if an employee books rail travel through a personal account rather than a corporate platform?

Collect the ticket receipt or booking confirmation showing route and date, and add it manually to your activity data alongside centrally booked journeys.

Does light rail or tram travel during a business trip count under rail?

Yes, light rail and tram journeys taken as part of a business trip are included under business travel rail alongside national and international rail services.

Activity data·Business travel

How to measure emissions from Business travel: Rail

Business travel rail covers train, tram and light-rail journeys taken by employees for work purposes, on services operated by third-party rail companies. Because organisations very rarely own the trains themselves, this activity sits entirely within Scope 3 Category 6, unlike road or air travel which can straddle Scope 1 too. It's a comparatively simple category to collect, since most rail bookings already capture route and distance through ticketing systems.

Scope: Scope 3 Category 6
What activity data you need: passenger.km, $ Spend, £ Spend
Activity data: Business travel

What counts as Business travel: Rail

Business travel rail is train, tram and light-rail travel undertaken by employees for work purposes on third-party operated networks. It includes national and international rail, as well as light rail and tram journeys taken as part of a business trip. It excludes an employee's regular commute, which is reported separately under employee commuting.

Business travel rail is one of the more straightforward categories to report, sitting entirely in Scope 3 Category 6 since organisations rarely own or operate trains directly. The main distinction to keep in mind is against employee commuting: a train journey to a client site or conference is business travel, while the same employee's daily train commute to their usual office is not. It also differs from business travel road, which can straddle Scope 1, 2 and 3 depending on vehicle ownership — rail stays purely Scope 3 regardless. As a reporting tip, national rail season tickets used partly for commuting and partly for business trips should be apportioned rather than counted entirely under one category.

How to collect the data

Corporate travel booking platforms and expense management systems typically capture route, distance and ticket type per journey, making them the most practical source. Where bookings are made directly with rail operators outside a central system, ticket receipts or itemised invoices can be used to build up passenger-kilometre totals. Where distance data isn't available, £ or $ spend on rail travel can be used as a fallback.

What activity data you need

Collect the most specific physical unit available. Unit definitions are in Appendix I — Description of Units.

passenger.km
$ Spend
£ Spend

Which emission scope it falls under

Business travel: Rail activity data typically maps to Scope 3 Category 6 under the GHG Protocol. Confirm organisational boundary and ownership before reporting.

Scope 3 Category 6

By emission scope

Scope 3 Category 6

Compliance frameworks

Compliance & reporting frameworks

Sub-types available in the platform

All 9 sub-types available in the platform.

International rail
Land travel: Average: UK
Light rail and tram
National rail
National rail: UK
National rail: US
Rail Travel: Average
Rail travel: Average: UK
Underground

Common questions

How do I separate business rail travel from an employee's regular commute?: Only include journeys taken for a specific work purpose, such as visiting a client or attending a conference — routine travel between home and the employee's usual workplace belongs under employee commuting instead.
Does a season ticket used for both commuting and business trips need splitting?: Yes, apportion the ticket cost or distance between the two categories based on how it's actually used, rather than assigning the whole ticket to one category.
Are international rail journeys, such as Eurostar, treated differently from domestic rail?: No, the same Scope 3 Category 6 treatment applies; select the international rail subtype where available so the correct route-based factor is applied.
What if an employee books rail travel through a personal account rather than a corporate platform?: Collect the ticket receipt or booking confirmation showing route and date, and add it manually to your activity data alongside centrally booked journeys.
Does light rail or tram travel during a business trip count under rail?: Yes, light rail and tram journeys taken as part of a business trip are included under business travel rail alongside national and international rail services.

By industry

Industries where this is material

Professional ServicesProfessional Services

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Related in this cluster·Business travel