Left Advance Turn Arrow Sign CAD Block

The Left Advance Turn Arrow Sign CAD Block follows the MUTCD Standard for lane-use and intersection guidance signs. This sign, labeled MUTCD M5-1L, notifies drivers in advance that a specific lane is designated for left-turn movements only. It plays an important role in organizing turning traffic and reducing confusion at intersections.

The sign features a bold black arrow making a 90-degree turn to the left, placed on a white rectangular background with a black border. This high-contrast design ensures maximum visibility during the day and night, as well as in poor weather conditions. As a result, drivers can anticipate left-turn maneuvers early and adjust lanes accordingly. Furthermore, the clear arrow symbol allows for fast comprehension and safer navigation through turning zones.

Specifications for Turn Arrow Sign CAD Block

According to the Guide Signs, the M5-1L sign should be installed ahead of intersections where the left lane is restricted to turning traffic. In addition, it is especially effective on multi-lane roads, signalized junctions, and high-volume intersections. Since this sign is part of the official MUTCD system, it delivers consistent guidance to drivers across different traffic environments.

Key Features

• Sign Code: MUTCD M5-1L
• Follows MUTCD standards for advance turn lane guidance
• Displays a bold 90-degree left-turn arrow
• Ideal for intersections with dedicated left-turn lanes
• Improves lane clarity and helps reduce last-minute lane changes

This sign improves driver awareness and encourages early lane positioning for left-turn movements. By delivering a clear and consistent message, it enhances intersection safety, reduces congestion, and helps maintain smoother traffic flow.

References:

• MUTCD Official Website
• Federal Highway Safety Programs

For more information, explore the CAD Drawings section.