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No, Di2 isn’t truly universal; frame routing, brake type, and parts compatibility decide if your bike can take Shimano Di2.

Yes, deaf people can ride bikes; safe cycling relies on sight, positioning, signals, and gear—not hearing.

No, cat claws rarely puncture bike tires; only thin sidewalls or latex tubes face real risk.

Yes, carbon fibre bike frames can be professionally repaired when damage is localized and the fibres can be re-laminated.

No, blood bikes can’t exceed speed limits; exemptions sit with ambulance, police or fire vehicles under strict conditions.

Yes, blind people can ride bikes—usually on a tandem with a sighted pilot, plus training and smart safety gear.

No, in the UK bikes must not ride on the pavement; use marked cycle tracks, shared paths, or the carriageway.

Yes—bikes may ride on the paved roadway, but riding on the sidewalk (UK: pavement) is restricted or banned in many places.

No—on most networks bikes can’t use footpaths, except where signs, local rules, or shared paths permit cycling.

Yes, bikes can ride many trains, but rules depend on operator, time, and bike type.