On-road crashes involving cyclists are often caused by a driver failing to see the cyclist. Cyclists are generally inconspicuous, as they are small, outnumbered and not a safety threat to drivers. Measures to improve cyclist safety should consider:

• Bike lanes (preferably separated) on a well-connected network;
• Slowing vehicle/bike speeds to around 30km/h;
• Advanced stop lines that place cyclists ahead of motor vehicles at intersections so motorists are more aware of cyclists;
• Right turn arrows at signals preventing filtered right turns in front of cyclists;
• Advanced green lights for cyclists allowing cyclists to depart signals early;
• Bike-activated visual warning signs to alert drivers about cyclists;
• Improved road lighting to highlight cyclists better at night;
• Cyclists wearing bright clothes and keeping their bicycle lights on for improved conspicuity;
• Prioritising vulnerable road users, by presuming liability for motorists involved in a crash unless they prove otherwise.

Source: https://theconversation.com/sorry-mate-i-didnt-see-you-when-drivers-look-but-dont-see-cyclists-on-the-road-244935