117 FAA Chart Users’ Guide - Terminal Procedures Publication (TPP) - Terms Runway construction is depicted as follows: Hot Spots (HS) are a runway safety related problem area or intersection on an airport. Typically it is a complex or confus- ing taxiway/taxiway or taxiway/runway intersection. A confusing condition may be compounded by a miscommunication  between a controller and a pilot, and may cause an aircraft separation standard to be compromised. The area may have a  history of surface incidents or the potential for surface incidents. Hot Spots are indicated on the Airport Diagram with a brown open circle or polygon leadered to a Hot Spot number, e.g.,  HS 1. The number corresponds to a listing and description on the Hot Spot page in the front the TPP. More information  and the location of Hot Spots can be found at http://www.faa.gov/airports/runway_safety/hotspots/hotspots_list/. Departure Procedures (DPs) are designed specifically to assist pilots in avoiding obstacles during the climb to the mini - mum enroute altitude, and/or airports that have civil IFR takeoff minimums other than standard. There are two types of  DPs: Obstacle Departure Procedures (ODPs), printed either textually or graphically and Standard Instrument Departures  (SIDs), always printed graphically. SIDs are primarily designed for system enhancement and to reduce pilot/controller  workload, and require ATC clearance. ODPs provide obstruction clearance via the least onerous route from the terminal  area and may be flown without ATC clearance. All DPs provide the pilot with a safe departure from the airport and transi - tion to the enroute structure. Generally, DP charts are depicted “not to scale” due to the great distances involved on some procedures or route seg- ments. A “to scale” portrayal may be used if readability is assured. The DP will show the departure routing, including transitions to the appropriate enroute structure. All routes, turns, alti- tudes, NAVAIDs, facilities forming intersections and fixes, and those facilities terminating the departure route are shown. A  textual description of the departure procedure is also provided. For RNAV DPs, the transition text consists of the transition  name and associated computer code. On non-RNAV DPs, the transition text will also include the description of all turns,  altitudes, radials, bearings and facilities/fixes needed to guide the user from the common departure point to the terminat - ing facility fix. DEPARTURE PROCEDURES (DPs) Hot Spots Runway Construction Hard Surface Other Than  Hard Surface Metal Surface Closed Runway Under Construction Stopways,  Taxiways, Park- ing Areas Displaced  Threshold Closed Pavement Water Runway