Drivers＇　visual　function　and　cognitive　ability　deteriorate　with　age,　and　road　marking　improvements　can　better　meet　the　driving　safety　and　comfort　needs　of　elderly　drivers.　To　provide　an　optimal　solution　for　marking　setup　and　management　for　a　large　elderly　community,　the　specific　enrichment　of　marking　width　and　retroreflective　luminance　coefficient　on　the　driving　safety　of　elderly　drivers　is　investigated　through　an　outdoor　real-vehicle　experiment.　Twelve　elderly　drivers　were　randomly　selected　as　experimental　participants　to　visually　detect　the　markings　under　the　illumination　of　the　vehicle　high　beam,　and　the　visible　distance　data　of　white　10,　15,　and　20　cm　wide　markings　with　retroreflective　luminance　coefficients　ranging　from　33　to　420　mcd.m-2.lx-1　were　collected.　The　results　showed　that　the　visual　detection　ability　of　elderly　drivers　to　pavement　markings　was　significantly　affected　by　the　width　and　the　retroreflective　luminance　coefficient　of　the　markings　and　the　enrichment　of　width　on　the　detection　ability　of　elderly　drivers　gradually　increased　with　the　increase　of　the　width　of　markings,　but　the　enrichment　of　the　retroreflective　luminance　coefficient　on　the　detection　ability　of　elderly　drivers　gradually　decreased　with　the　increase　of　the　retroreflective　luminance　coefficient　of　markings.　The　logarithmic　function　models　of　the　retroreflective　luminance　coefficient　of　markings　and　the　detection　distance　of　elderly　drivers　with　different　marking　widths　were　obtained　by　fitting.　The　results　can　provide　a　technical　reference　for　proposing　alternative　countermeasures　for　the　design,　maintenance,　and　updating　of　pavement　markings　based　on　meeting　elderly　drivers＇　safety　with　respect　to　economic　cost　and　low　carbon.