Modern Vespa

hi the v5c tax book it is motorcycle on side of mp3 is 250 I e i has front suspension locking unlocking does not say rt or lt on it so can I ride it with car licence thanks

No idea what a "v5c tax book" is.

The difference between RL and LT is the distance between the front wheels.

Per Euro legislation, only the LT version has the correct distance along with the mandated foot brake pedal to allow it to be ridden on a ordinary car license.

The RL does not.

Just look through the vehicle documentation, specifically the certificate of conformity to determine how the vehicle is classed.

If it is classed as a motorcycle, then you will need a motorcycle license.

If it is classed as a tricycle (look for L5e on the document) then you can ride it on a regular car license assuming you got your car license no later than mid January 2013 IIRC.

The UK doesn't have individual CoC's for each vehicle. It's all down to how it's described on the V5 - the Keeper's registration Certificate. However, you could (can still?) add spacers to the front wheels and get the V5 altered to read tricycle (or quadricycle).

And you're right that it also depends when the OP got their B driving licence.