Case study · EngageAI

46% reduction in taxi journeys due to timely nudges

EngineeringConsultancy

A global engineering consultancy was overpaying on airport ground transport by 10x.

The challenge

The airport taxi is a habit, not a decision

They had strong sustainable travel policies that their employees follow, and public transport was the default for a lot of their travellers arriving in London. But they knew some travellers were still expensing taxis to their central London office.

10x
From Heathrow Airport, this can cost up to £140 per trip whereas the Elizabeth line ticket costs £13.90.
The solution

Highlight how the switch benefits the traveller

EngageAI monitored their corporate travel bookings in real time and sent personalised interventions to employees as they landed, before they reached the taxi rank. Each message was tailored to the specific arrival airport, destination, and time of day. The message focused on the benefit to the traveller and reducing decision friction. 

Each intervention included
Personalised route recommendations with live journey times and cost comparisons
A direct comparison between the recommended public transport route and a taxi
Payment and expensing guidance to remove barriers to choosing public transport
Real-time weather information and walking time to remove uncertainty
Sent on WhatsApp the moment the traveller lands
14:32 5G
Tuesday 17 March 14:32
Corporate travel team now
Travel update: Welcome to London Take the Elizabeth line (53 mins). It’s in policy and 30 mins faster than a taxi.
‹ T
Corporate travel team Business account
Today
Travel update: Welcome to London

Take the Elizabeth line (53 mins). It’s in policy and 30 mins faster than a taxi.

All options
•
Elizabeth line 53 mins, £13.90 Recommended
•
Taxi Up to 1h 17 mins

13°C and mostly sunny, about 9 mins of walking.

Tap your contactless card on the yellow reader, then screenshot the payment for your expenses.

14:32
View route
The impact
46% reduction in taxi journeys compared to non-nudged travellers
How it was measured +

Taxi use by nudged employees compared with a similar group who received no nudge over the same period.

£50 saving each journey switched
How it was measured +

The difference in taxi rates between nudged and non-nudged groups, applied to an average £89.50 fare.

24% of employees were nudged on more than one journey, with no drop-off in effect
How it was measured +

Every employee nudged more than once still chose public transport across the eight-week pilot.

Conclusion

A proven intervention, ready to scale

The results from this pilot are the foundation for a wider rollout. They have expanded their contract to allow EngageAI to cover ground transport in more cities where public transport is a viable option, with a particular focus where their current taxi usage is high.

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