Here are some examples:

1. Traffic Signals and Signage: Traffic signals and road signs  are one of the most common road safety devices. They help regulate the flow of traffic, reduce conflicts between different directions of traffic, and prevent collisions at intersections. Government regulations and safety standards play a critical role in the design and implementation of roadway safety devices by setting speed limits, specifying the types and locations of safety devices, and providing oversight and enforcement of traffic laws and rules for all users of roadways and crossings. 

2. Roundabouts: Roundabouts are circular intersections that force drivers to slow down and yield to other vehicles. They help reduce the severity of collisions and improve traffic flow, especially where mergers need to occur.

3. Speed Humps: Speed humps are raised areas on the road that force drivers to slow down. They are often used in residential areas to reduce speeding and improve safety for pedestrians and cyclists. You may notice many of these installed on roads near schools, or parking lots in shopping plazas. 

4. Guardrails: Guardrails are barriers that are placed along the side of the road or median to prevent vehicles from leaving the roadway. They are often used on highways and other high-speed roads.

5. Crash Barriers: Crash barriers are similar to guardrails, but they are designed to absorb the impact of a vehicle and reduce the severity of a collision. These may be made of metal designed to crumple and absorb the impact, or sand buckets. 

6. Road Markings and Signs: Road markings and signs are used to provide information to drivers and guide them safely through traffic. They can include things like stop signs, yield signs, speed limit signs, and lane markings.

7. Pedestrian Crossings: Pedestrian crossings are designated areas on the road where pedestrians can safely cross. They often include crosswalk markings, signalized crossings, and pedestrian islands.

8. Traffic Calming Measures: Traffic calming measures are designed to slow down traffic and make roads safer for pedestrians and cyclists. They can include things like chicanes, traffic circles, and speed tables.

   • Chicanes: Chicanes are a type of traffic calming measure that use geometric design to slow down traffic. They are typically created by narrowing the roadway and creating a series of turns or curves that force drivers to slow down. Chicanes are often used on residential streets to discourage speeding and improve safety for pedestrians and cyclists.

   • Speed tables: Speed tables are flat-topped raised areas on the road that are designed to slow down traffic. They are typically installed at intersections or mid-block locations where speeding is a problem. Speed tables are often combined with crosswalks, pedestrian islands, or other traffic calming measures to improve safety for pedestrians and cyclists.

9. Intelligent Transportation Systems (ITS): ITS use advanced technology to improve safety and traffic flow on roads. They can include things like traffic cameras, dynamic message signs, and traffic signal synchronization.

10. Autonomous Safety Features and Autonomous Vehicles:  Many auto makers are installing devices that can automatically detect and slow or stop vehicles in the event a collision with an object, car, or pedestrian is detected.  Furthermore, Autonomous vehicles have the potential to significantly reduce the number of collisions on the road by eliminating human error. As the technology improves and becomes more widespread, we may see a reduction in collisions and a corresponding increase in road safety.

11. Rumble strips are a type of road safety device that are designed to alert drivers through sound and vibration that they are entering an area where they need to take caution or where they may need to change their driving behavior. They are typically made up of rows of raised or grooved pavement, which cause a loud noise and vibration when vehicles drive over them.  

    • Warning for hazardous areas: Rumble strips can be used to warn drivers of hazardous areas, such as sharp curves, steep inclines or declines, or areas where there may be pedestrians or wildlife. By alerting drivers to these areas, rumble strips can help them slow down and adjust their driving behavior accordingly, reducing the risk of collisions.

    • Distracted driving prevention: Rumble strips can help prevent distracted driving by providing an audio and physical cue to drivers who may be drifting out of their lane. This can help them refocus their attention on the road and avoid collisions.

    • Speed reduction: Rumble strips can also be used to reduce speeds in areas where speeding is a problem. The loud noise and vibration caused by the rumble strips can be a deterrent to drivers who may be tempted to speed, and can also help slow them down when they enter a hazardous area.

    • Improving visibility: Rumble strips can improve visibility on the road by providing a tactile cue to drivers that they are approaching a hazard. This can be particularly helpful in areas with low visibility, such as in fog or rain.