Can you Increase Specular Scale on Directional Light past 1.0? (Wet Road Sun Glare)

Shoulder and White Clip will both allow you to reach full white if you want in your highlights/over-exposed areas. But you’re also going to have to position your camera correctly too. All of those images have the camera lower to the ground and looking at a long strip of a wet surface, so the Fresnel effect is more apparent and the camera is at a position close to the angle of reflection for the light source.