Driver Bubble™ Shield material is approved by Millbrook Proving Ground for TfL compliance

A more recent update on this topic is available

Please refer to our latest update regarding the TfL approval of the Driver Bubble™ Shield standard.


As of 21st August 2020, the materials used to manufacture the Driver Bubble™ Shield standard has been approved and certified by Millbrook Proving Ground Ltd as part of the two-step process for full TfL compliance.

Millbrook Proving Ground Ltd suggested that additional testing (airbag deployment test) would be required in order to confirm compliance and that there is now adequate evidence to confirm the material will meet the TfL required standard.


As set out in the ECE 43.01 document, the Shield was subject to flexibility, impact 227g, fire resistance, light, and chemical resistance tests.

Flexibility Passed

Het schild heeft een verticale afwijking van 12mm gemeten. De vereiste afwijkingsgrens is 50mm.

Impact 227g Passed

Er werd een bal laten vallen op de Shield vanaf 2 meter hoogte. Geen schade was vastgesteld.

Fire resistance Passed

Het materiaal dat wordt gebruikt voor de Shield is zelfdovend, dus er was geen berekening van de brandsnelheid vereist.

Light Passed

Het vereiste transmissiepercentage dat nodig was om de test te doorstaan is 70% en de Shield meet 89,67%.

Chemical resistance Passed

Deze test werd uitgevoerd met niet-schurende zeep, glasreinigingsoplossing, onverdunde gedenatureerde alcohol, benzine en kerosine. Voor elke chemische stof zag de Shield geen verzachting, kleverigheid, haarscheurtjes of verlies van transparantie.

Next steps

In the coming days, the Shield will be subject to an airbag deployment test. Once the Shield has passed this test, the product will be fully approved and certified for use with TfL.

Keep your eyes open for the coming updates regarding the latter.

About Driver Bubble™

The Driver Bubble™ is a simple, intuitive screen that fits into most vehicles and helps shield passengers and drivers alike. Born out of Amsterdam, the company designs and builds protective screens for the global taxi, rideshare and transportation industry.