$4\mathrm{.}7$ PRACTICE PROBLEMS

Problem $4\mathrm{.}1$

Along an urban arterial, utility poles are near the edge of the roadway and have been struck by errant drivers repeatedly. What options should be considered to address these potential hazards?

Solution

Using the prioritized hierarchy of options, the following options are possible. The higher$-$rated options should be considered first with a consideration of effectiveness and cost$-$efficiency.

Remove the obstacle: utility poles can be removed if the ability to place the utility lines underground is feasible.

Redesign the obstacle to include traversable features: this option is not possible for utility poles.

Relocate the obstacle to a further offset location from the edge of the roadway: utility poles could be moved further from their current location if available right of way for the utilities exist beyond their current location.

Reduce the severity of impact with inclusion of an appropriate breakaway device: utility poles can be designed with a breakaway base to lessen the forces on the vehicle.

Shield the obstacle with a longitudinal traffic barrier designed for vehicle redirection or use a crash cushion: barriers can be installed to shield the utility poles from errant vehicles, however, the barriers also pose a risk to errant vehicles.

Delineate the obstacle if the preceding alternatives are not appropriate: if no other alternatives are feasible, the utility poles can be painted or marked to increase their visibility to drivers.