The speed limit statutes are as follows:

• 30 mph on all highways in a business district and undivided highways in a residential district.
• 35 mph on a divided highway in a residential district.
• 50 mph on undivided highways in other locations.
• 55 mph on divided highway in other locations.
• Maximum speed limits of more than 55 mph may not be established or continued on any highway in the State of Maryland that is not an interstate highway or an expressway.
• A maximum speed limit of more than 65 mph may not be established on any highway in the State of Maryland.

The following conditions influence speed limits?

• A typical traffic characteristics because of particular land use or other conditions.
• Road designs elements substantially above or below what are atypical.
• Prevailing speeds consistently higher or lowers than the statutory speed limit.
• Transition between rural and urban areas on major highways.
• Schools or other significant pedestrian traffic areas.
• Road construction activity.
• Frequent collisions in which speed is a contributing factor.
• Unusual or unanticipated conditions.

A traffic engineering study is the observation and analysis of road and traffic characteristics to guide the application of traffic engineering principles. The study of traffic limits includes the following:

• Review of the road's environment, features, and conditions and traffic characteristics.
• Observation and measurement of vehicle speeds at one or more representative spots along the road in ideal weather and under free-flowing traffic conditions.
• Analysis of the vehicle speeds to determine average and 85th percentile speeds and other characteristics.
• Review of the road's crash history.
• Review of any unusual conditions not readily apparent to the driver.