SolaRight’s Wrong-Way Deterrent Makes
Driving Safer

Today’s busy roadway systems can be confusing; at night, it can be even more difficult to determine the correct direction or lane to choose. Wrong-Way Driving is defined as vehicular movement along a travel lane in a direction opposing the legal flow of traffic on high-speed divided highways or access ramps. Although wrong-way accidents are not very common, the outcome can be disastrous, resulting in a large percentage of head-on collisions.

Stop Bar Diagram
Exit ramps that terminate at two-way streets
have high wrong-way entry rates.

Although signage is most often present in these scenarios, signage at night can be particularly difficult to see. Wrong-way collisions occur more frequently at night; 78 percent of fatal wrong-way collisions occurred between 6:00pm and 6:00am. The obvious solution is to provide better lighting so drivers can see wrong-way indicators and signage.



Wrong-Way deterrent
lighting is particularly
useful for pointing out:

  • Wrong-Way Driving
  • Wrong-Way Entry Deterrence
  • Wrong-Way Entry Rate
  • Distinguishing Entry ramps from Exit Ramps
  • Incomplete Interchanges and Loop Exit Ramps
  • Interchanges with short sight distances.


Wrong way solar light solutions
Exit ramps that terminate at two-way streets have high wrong-way entry rates.


The NTSB concluded that to reduce wrong-way errors,
traffic control devices should be designed to make
exit ramps readily distinguishable from entrance ramps;
to some extent, this can be achieved by installing
signage, roadway marking, and roadway lighting.

SolaRight’s Featured Product:

SolaRight’s YHDD1 IIRPM light is an Internally Illuminated Recessed Pavement Marker and is an effective light for Wrong-Way lighting. The YHDD1 emits light that is visible up to ½ mile away, making them redundant and brighter forms of Wrong-Way Indentification.

SolaRight’s YHYS IIRPM light is also very effective to help call attention to Wrong-Way signage. The YHYS IIRPM also comes in multiple colors for various sign types including red for Wrong-Way applications. The YHYS IIRPM and the YHDD1 IIRPM are both visible up to ½ mile away. SolaRight also offers a Uni-Brac that attaches to signage and other structures.


Internally Illuminated Recessed Pavement Markers (IIRPMs)

SolaRight YHDD1

SolaRight is the originator and patent holder of the Solar Road Marker. The original and best roadway Internally Illuminated Recessed Pavement Markers (IIRPM) lights in the business, SolaRight’s YHDD1 offers years of reliable, cost-effective transportation safety. Made of virtually indestructible cast aluminum, the YHDD1 IIRPM is IP-68 rated and fabricated to withstand heavy vehicles and even snowplows. Ideal for wrong-way indicators, curved roads and as lane delineation. Installation is simple- a hole and epoxy ensure maintenance-free, grid-independent service.

Because of SolaRight’s POWRtech technology, there are no wires to install, no batteries to replace and virtually no maintenance required over the 10+ year life of the products.

The YHDD1 (IIRPM) works well for:

  • Wrong-way
  • Curved Roads
  • Lane delineation
  • Visibility in inclement weather and
  • Help reduce run-off-road crashes.
SIZE: 5.5" x 5.83" / HEIGHT 1.97" / WEIGHT 2.0 LBS.

Internally Illuminated
Raised Pavement Markers(IIRPMs)

SolaRight YHYS

SolaRight is the originator and patent holder of the Solar Road Marker. SolaRight’s YHYS (IIRPM) is one of its most versatile lights. Combined with our Uni-Brac sign topper, our YHYS calls extra attention to signage. The YHYS also works well on top of jersey barriers, curb tops and bullnoses and in many other capacities. SolaRight's YHYS is an excellent product to better illuminate your signage and help with lane channelization. Like all other SolaRight products, the YHYS utilizes POWRtech technology, installs quickly and provides years of maintenance-free service.

The YHYS works well for:

  • Safety Signage
  • Jersey barriers
  • Curb Tops
  • Guardrails
  • Aid driving in adverse weather conditions and
  • All-Weather Elevated Curb and Lane Delineation.
SIZE: 4.33"x 3.54"/ HEIGHT 1.18" / WEIGHT 0.86 LBS.
Wrong way solar lighting so
SolaRight's YHYS on our UniBrac™ mounting system calls attention to wrong-way signage.

YHYS Solar Light Flashing Red

Product Flyer Spec Sheet icon1 Installation Instructions