IS EN 1436 European Standard for Road Markings:

IS EN 1436 – Road Marking performance for road-users is an end performance specification concentrating on the needs of the driver. The standard specifies the various levels of performance that are approved for use in a contract specification, which will govern the required quality of the road marking. It also describes the methods of measuring the various performance characteristics. These IS EN standards have a number of levels of quality specified for several road marking characteristics.

The standard specifies the performance of white and yellow road markings based on luminance (colour), day-time visibility, night-time visibility and skid resistance combined with durability. These specifications also introduce the importance of wet-night visibility road markings. IS EN 1436 allows the Client to specify the performance needs of their road markings.

The tables in the specification allow the Client to choose the performance required from road markings, leaving the onus on the contractor to produce a marking to meet their needs.

Specifying Criteria for White Road Markings – IS EN 1436

Specifying Criteria for Yellow Road Markings – IS EN 1436

USA. Manual on Uniform Traffic Control Devices (MUTCD).
MUTCD 2009 Section 2A.09 Table 2A-3.

The Federal Highway Administration (FHWA) and The Manual on Uniform Traffic Control Devices (MUTCD) requires agencies to establish and implement a sign assessment or management method that will maintain minimum levels of sign retroreflectivity.
On May 14, 2012, a final rule was published in the Federal Register, revising Table I-2 in the Introduction of the 2009 MUTCD to modify the compliance dates for the minimum maintained sign retroreflectivity standard. That rulemaking extended the compliance date for implementation and continued use of an assessment or management method that is designed to maintain traffic sign retroreflectivity at or above the established minimum levels to June 13, 2014 and refined the compliance date to only apply to regulatory and warning signs, and not others.

MUTCD Pavement Marking Retroreflectivity Standard.
MUTCD Section 3A.03.:

Pavement markings are an accepted method to communicate both the intended travel path and roadway alignment for drivers during day and nighttime conditions. To ensure consistent application of pavement markings, their characteristics and warranting criteria are described in the Manual on Uniform Traffic Control Devices (MUTCD).

The new MUTCD Section 3A.03 requires agencies to use a method designed to maintain longitudinal pavement markings to a minimum level of retroreflectivity outlined in Table 3A-1. The Federal Highway Administration (FHWA) believes that this change will promote safety while providing sufficient flexibility for agencies to choose a maintenance method that best matches their specific conditions.

Table 3A-1. Minimum Maintained Retroreflectivity Levels1 for Longitudinal Pavement Markings