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  2. Runaway truck ramp - Wikipedia

    en.wikipedia.org/wiki/Runaway_truck_ramp

    It is typically a long, sand- or gravel-filled lane connected to a steep downhill grade section of a main road, and is designed to accommodate large trucks or buses. It allows a moving vehicle's kinetic energy to be dissipated gradually in a controlled and relatively harmless way, helping the operator stop it safely.

  3. Road traffic safety - Wikipedia

    en.wikipedia.org/wiki/Road_traffic_safety

    Road traffic safety refers to the methods and measures used to prevent road users from being killed or seriously injured. Typical road users include pedestrians , cyclists , motorists , vehicle passengers, and passengers of on-road public transport (mainly buses and trams ).

  4. Pavement condition index - Wikipedia

    en.wikipedia.org/wiki/Pavement_Condition_Index

    The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]

  5. Jersey barrier - Wikipedia

    en.wikipedia.org/wiki/Jersey_barrier

    Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.

  6. International roughness index - Wikipedia

    en.wikipedia.org/wiki/International_roughness_index

    Roughness progression for a road in Texas, US. Blue dots show the times of maintenance. The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of ...

  7. Baltimore’s Belair Road to get more safety ... - AOL

    www.aol.com/baltimore-belair-road-more-safety...

    Belair Road, a busy road that extends from East North Avenue across the county line and into Harford County, usually sees a number of fatal crashes every year, though there’s been an uptick in 2024.

  8. Glossary of road transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_road_transport...

    See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...

  9. Junior safety patrol - Wikipedia

    en.wikipedia.org/wiki/Junior_safety_patrol

    Junior safety patrol is a voluntary group of crossing guards involving older students helping younger students cross streets in elementary and middle schools across the United States and Canada. Both the Chicago Motor Club and the St. Paul Police started programs in 1920.