If you've travelled down the PM HWY you may have noticed that they have installed rumble strips along the sides and center line of that road. Particularly, if you've travelled by bicycle, motorcycle or horse-and-buggy.
I think such rumble strips are excellent ideas for limited access highways/freeways and prevent a lot of ROR (run off the road) accidents most often occurring by drowsy/intoxicated drivers falling asleep at the wheel and distracted drivers, texting or fiddling with other gadgets, maps, or children.
But has there been any such accidents happening on the PM HWY in recent years to warrant such an expense to the already overburdened taxpayer, who are already travelling over rutted roads in many areas of the county? If not, why install these potentially dangerous features, when studies have shown that they generally only encourage distracted driving in such areas, which may lead to an increase of ROR incidents?
Here's what wikipedia acknowledges about these strips, and the safety of some road users:
Cycling standards
The Transportation Association of Canada and US FHWA guidelines basically require that a width of 1.5m (5ft) of clear paved shoulder between the outside of the rumble strip and the edge of pavement is adequate to provide cyclists with a clear travel path.
However, in situations of parked vehicle on the shoulder, debris on the shoulder, or downhill sections even the 1.5m (5ft) clear path requirement rumble strips presents a significant hazard particularly if the pavement is wet. The argument that rumble strip help protect cyclists is puzzling as inattentive drivers' vehicles generally pass entirely over the rumble strip before recovery.
Other related FHWA guidelines are: "Rumble strips should not normally be used in urban or suburban areas or along roadways where prevailing speeds are less than 80 km/h (50 mph)." and "All responsible agencies should work in cooperation with bicycle groups, enforcement agencies, emergency groups and other roadway users, to develop policies, design standards and implementation techniques that address the safety and operational needs of all roadway users." and "To provide a clear area beyond the rumble strip for bicycle travel, highway maintenance agencies should periodically sweep shoulders along identified bicycle routes of high bicycle usage."
In the United States, the 1999 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Development of Bicycle Facilities recommends minimum standards for road shoulders receiving rumble strips to accommodate all users of the roadway and make best use of funds.
Numerous U.S. and Canadian cycling associations have complained about encroachment of rumble strips and one club even launched a lawsuit to have them paved over and an online petition to halt the practice.
A 2005 Quebec study concluded: "Based on the results of the analyses, it was not possible to recommend a type of rumble strip that would provide sufficient warning to drivers who encroach on the shoulder while remaining safe for cyclists who ride over it."
A 2003 Montana study suggested: "It was also recognized that bicyclists cannot operate on shoulders with rumble strips and it was indicated that shoulders would be swept as needed."
Once a section of highway with very narrow paved shoulders is rumble stripped cyclist tend to avoid them, however, sometimes unsuspecting cyclists do have serious accidents.
Much bicyclist opposition to rumble strips stems from situations in which no quantitative data is used to justify their installation and installation is not in accordance with the standard. Rumble strips on narrow shoulders force bicyclists into the roadway, where it is less safe to ride.
Furthermore, this scenario will force vehicles to make an otherwise unnecessary lane change to go around cyclists and there is a correlation with frequency of lane changes and accidents. "According to the National Highway Traffic Safety Administration, 9 percent (533,000) of all accidents occurred when vehicles were changing lanes or merging." In certain incidents, a vehicle attempting to avoid cyclists (without striking the cyclists) may go off the road or even sideswipe a passing or an oncoming vehicle.
CLRS are a concern for cyclist as well as motorist do not move over towards or cross the centerline to provide sufficient space when passing bicyclist.
Rumble strips are very inexpensive to install, so there is concern that some installations are frirvolous. The 2009 economic stimulus infrastructure spending in the U.S. and Canada has raised concerns that many new shoulder rumble strips will be frirvolous as well.
In 2009 in St. Joseph County Michigan, after a lobby by the local Amish community a new $20,000 rumble strip installation was removed at a cost of $275,000 to the taxpayer. "M-DOT says they are not removing the strips just to appease the Amish. They say it is far more dangerous to have horses jumping out into the road that (sic) it is to not have the rumble strips on the road."
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All the bicycle tours that come through Ludington go through the section of PM HWY between Sixth Street and Iris Road. These have now been made inhospitable to cyclists: for now they have to ride exclusively to either side of the strips. If they ride on the road, it is much more dangerous to the bikes and the vehicles that will need to pass them by going to the left lane. If they stay to the outside, parked cars near the bridges and other debris will force them over the strips and into the road.
Motorcyclists will have increased dangers when they pass or travel too close to the road edge, and the Amish are going to be greatly endangered and inconvenienced when they come to town.
I don't see the justification for these rumble strips along the PM HWY or any other local road, but does anyone else see any benefit from them?
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