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What is the effect of in-pavement flashing lights on motorist speeds, yielding behavior, and conflicts with pedestrians?
Many communities are asking about the efficacy of in-roadway flashing warning lights as a safety enhancement at uncontrolled pedestrian crosswalks. An in-roadway warning light system (IRWL) "consists of a series of amber or white lighting units encased in durable housings and embedded in the pavement parallel to a marked crosswalk& ...more >
What is the state of the art in pedestrian countdown signals?
Countdown signals tell pedestrians the amount of time remaining before the flashing upraised hand changes to a solid upraised hand or "don't walk" indication. Research shows that both drivers and pedestrians tend to comply with these signals more often than with non- ...more >
What is the current 'state of the art' regarding the design of safe crosswalks, especially in urban settings?
Treatments to improve the safety of crosswalks include: Raised mid-point median. Pedestrian-initiated amber, overhead flashing lights. Stopline painted on the roadway some distance in advance of the crosswalk ( ...more >
Why doesn't our city install more traffic signals to help us cross the street?
Traffic signals are an important means of traffic control. When used properly (and where warranted) they can help improve safety, move more cars, and make it easier to cross the street. The number of crashes at an intersection ( ...more >
How can we make bicycle/pedestrian connections in cul-de-sac developments?
Safe and convenient bicycle and pedestrian travel options and connectivity are crucial to building an efficient, functional, sustainable transportation system. Culs-de-sac can create barriers to such a system. ...more >
What are the advantages and disadvantages of a road diet?
The road diet is a relatively new concept. Many roadways have been overbuilt to keep pace with increases in automobile travel but some roadways actually perform worse with the additional lanes. A road diet solves this problem by removing unneeded lanes or narrowing existing travel lanes to reallocate space for other needs ( ...more >
Do roundabouts work for bicycles and pedestrians?
Modern roundabouts by their design require motorists to slow down typically to less than 25 mph (40 km/h), and preferably 15 mph (25 km/h) to proceed through the intersection. The literature shows that, ...more >
Back-in angle parking: what is it, and when and where is it most effective?
Back-in angle parking provides motorists with better vision of bicyclists, pedestrians, cars and trucks as they exit a parking space and enter moving traffic. Back-in angle parking also eliminates the risk that is present in parallel parking situations, ...more >
How can I predict sidewalk use?
While most communities routinely collect motor vehicle traffic counts, very few gather pedestrian counts. This means that the data necessary to reliably predict sidewalk use is rarely available. The leading method for predicting walking trips involves a complex model from university research which examines four factors: ...more >
Can separate bicycle facilities (shared use paths) be built within interstate rights-of-way?
Yes. The Federal Highway Administration issued Guidance on Bicycle and Pedestrian Provisions of the Federal-aid Program on February 24, 1999, which states: "Shared use paths along Interstate corridors are eligible for the use of National Highway System ( ...more >