Yes, all that has been posted in here at the time of those law changes, 6th April 2015.The throttle ‘dilemma’
Harmonisation with EU law has had an important effect on electric bikes with ‘twist and go’ throttles that can take the bike to full speed without any pedalling at all.
From January 1 2016, the only throttles legal within the UK’s EAPC legislation are those that assist the rider without pedalling up to a maximum speed of 6 km/h (3.7 mph) – ie starting assistance only.
If the rider is rolling – but not pedalling – faster than 6km/h, the throttle cuts off. If the cyclist pedals at the same time then the throttle can still assist up to the general limit of 15.5mph.
If you bought an ebike with a full-speed throttle before January 1 2016, don’t panic: those sold prior to this date are still considered as EAPC and do not require a registration or taxed. Practically, you could still buy one a ‘twist and go’ and not be fined, but it would have to have been produced or imported before January 1.
In fact the DfT have tried to make throttles legal here, here's the extract from their legal advice:
Power assistance - "Twist and Go"
Because of the particular benefits for elderly and disabled users, pedal cyclesproviding electrical assistance without use of the pedals - usually called "Twist and Goes" - are included in the above GB classification provided they are capable of pedal operation
and comply with the above restrictions on maximum motor power and assistance cut -off speed.
However, under European law new "Twist and Go" vehicles will, from January 2016, have to meet a range of technical requirements before they can be used on roads. This will normally be established by "type approval" at the manufacturing stage but importers and individuals will be able to seek an individual approval for vehicles that have not been type approved.
Unfortunately the EU wouldn't co-operate in providing any way of individual or mass type approval as EAPCs.
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